You must be catholic... Guess the Bible alone is not good enough or we are just stupid...
People have used the "bible alone" to sanction the KKK, the holocaust, "gay marriage", sodomy, snake-handling, absolute pacifism, child abuse, and wife battery, to name but a few evils.
If the "bible alone" were enough, then preaching to the baptised is a waste of time. But we both know it is not.
We have pastors and preachers because the "bible alone" has, since the beginning of time, been recognized as "not enough".
Scripture backs this up by mandating that we have an organized church made up of humans with authority to interpret and bind the faithful.
You have your man-made traditions (and extra-biblical spin of what the bible means) but deny it. Whereas Catholics have always claimed that Christ actually gave the Church authority and used that authority to safeguard and spread the good news.