And just what is any priest in his right mind doing marrying a seven year old child?
No, it's not valid in any respect.
It is no excuse for an annulment because there was no marriage, it's child rape and needs to be prosecuted as the crime it is.
Do you think that a marriage against the will of either party is a valid marriage or should the Church nullify it?
Does not the couple go to pre-cana and should not the priest have determined that BEFORE marrying them? And in this day and age? Marrying against one's will?
We are past the days of arranged marriages but I simply cannot believe that all arranged marriages were entered into by willing partners and yet those marriages were considered valid and binding. Didn't amtter what the man and woman thought.
And where does God allow an exception for that anyway? Would you care to provide some Scripture to support that?
Do you think the marriage involving a seriously mentally disabled or unconscious person is invalid or should the Church nullify it?
See response to marrying a child. Do you mean to seriously assert that one of your priests is going to marry someone who is unconscious for the wedding? Really?
Or that the priest can't determine that someone is mentally deficient to the point that they ought not to marry?
So what business does he have marrying them in the first place?
Do you think that the marriage to someone who is already married to one or more other persons is a valid marriage or should the Church nullify it?
Bigamy is also a crime and the marriage is already not recognized by civil authorities. It doesn't take an annulment to admit that.
Catholicism is a global religion with members in every country and culture. The problems and issues are not limited to the inconveniences of your white bread community. More than a few priests and prospective spouses have been bamboozled in the premarriage counseling.
Polygamous marriages are recognized civilly in nearly fifty countries and even where illegal still occur. A civil recognition of an invalid marriage does not nullify it in the Church.
Historically there have been marriage contracts involving children. They are still common in India, Nepal, Pakistan, Bangladesh, Sri Lanka, in many parts of Africa, the Middle East, and Southeast Asia and often are done against the will of the women and often involve threats and coercion. Unless you are advocating the use of water-boarding and polygraphs errors are going to be made. When errant marriages have been performed the Church has an obligation and a process to recognize the error.
Peace be with you
A related question is whether or to what extent Popes (particularly Sixtus V) promoted the castration of young boys for the choir of St Peter’s, a common practice in the 17th and 18th centuries (in Protestant countries as well) for providing castrati for choirs:
http://www.hektoeninternational.org/castrati.html
http://www.usrf.org/news/010308-jenkins_lancet.html
http://en.wikipedia.org/wiki/Castrato
http://www.usrf.org/news/010308-castrati.html