Let me have a stab at answering:
Because the only two things that are unchanging are God and human nature.
Because God's God and we're not.
Because technology has made much information available that is far beyond the capacity of man to understand most of it.
Because there is only one Truth and it is contained in Revelation but is also discoverable through reaason or science,but it will be the same.
Because words and languages are imperfect purveyors of Truth.
Because Faith is necessary to to fulfill God's plan for us.
Because reason pursues Truth through science and science will increasingly confront God;however,man with his human nature will often try to claim ownership of the Truth he discovers.
Because God's plan for us is for us to know,love and serve Him in this world so that we may live in heaven with Him forever.
Because God is a loving Father,He wants those of us who have the Faith to help bring everyone home to Him and while we are at it,make the world more beautiful,true and good for as many others as we can.
Because the Catholic Church contains everything necessary to bring all home to the Father.
The above facts and little pieces of Truth commingle,combine,build on and temper one another. But to me,taken in total,make clear that we have an obligation to try to do God's will and we waste time arguing about a lot of points,some that are of little matter,not understood completely and even more important,at this point are not under our control. Because people on this forum have received innumerable gifts from God;that we are Catholic,live in the US, can read and write are just a few of them. The real dumb games are when we stomp on each other rather than deal with the "progressives" who want to wrest control of the Church from God and put it under the control of man from within or the secular world who wants to sieze it from without. Those are the enemies aligned with their friend Satan fromthe other world.
While I think that one group on these threads respects the beauty and integrity of the Tridentine Mass,they do not like to be told that there is no hope unless it is in universal use,nor do they want to have every move that the Pope makes come under microscopic scrutiny. That his words and his actions are denigrated,called into question,ridiculed,derogated, and dismissed is very hurtful to me and harmful to the Church in general.Catholics know that he has not changed the Dogma and Doctrine of the Church,they know he is not changing the teachings of the Church and he is safeguarding the Deposit of Faith. If he emphasizes one aspect of Truth over another in these times,they understand and don't want to reinvent the wheel with the other side all over again.
They know he is not impeccable,they also know Christ gave Peter the Keys and gave him governance(among other responsibilities) of the Church,and the flock.They also accept that they (we) don't know what the Pope knows. We just trust that what Jesus said was true. We also know that the Pope has the ear and guidance of the Holy Ghost.
OTOH,when the radical traditionalists (as they often call themselves) accurately describe a problemm,we should not distract from focusing on it and uniting to solve it,by accusing them of being schismatic or sede vacantists. most of them are not and bristle at being wrongly accused. On their side is the brutality and deceit that was used by prelates in high places to try to extinguisth the Tridentine Mass and the concomitant destruction of the teachings of the church by these same infiltrators and imposters. They have some very cogent and factual points. The biggest difference is that they hold good,holy Catholic prelates responsible for introducing this poisen into the Body of Christ,but we believe that the good Successors of the Apostles were just like we wre,unaware of the enemy who dressed as shepards.That is why we stand with the Pope in trying to drive out the false apostles,who have disguised themselves as Catholics.
One final thought for especially the radical traditiionalists (as they call themselves) In the early 1500's the Pope issued a Papal Bull called Sublimus Deus (or close). He said clearly that taking men's property or using men as propery (slavery) was a terrible sin and was not to happen.It was issued to Bishops all over the world. Who ever heeard of it,as recently as two years ago in some adult ed class provided by Jesuits,I heard the same-o,same-o. "Until after the Second WW the Church remained silent on the sin of slavery." I brought up that particular Bull and it was embarassing to him,the young Jesuit had no idea that such a thing had been promulgated by a Pope.
I use this example to point out to those of you who seem to look to the past for the idyllic days of the Church,you know back when people obeyed the Pope and he acted to implememnt his teachings,to show those times never were. No,we sinners,who never change our basic nature must just go on stumbling and falling and picking ourselves back up,and with Peter,(who God in His Mercy gave us) keep the Barque afloat and on a straight course. God Bless and excuse the sporadic and random incoherence.