I don't think the Catholic Church is going away. 62.46% of people in America claim Catholicism. It is 39.59% in Europe.
Also, stats for America and Canada show that 75% consider themselves Christians.
Most people believe in a God of some sort. Each of the individual groups has their own set of beliefs. Some less orthodox and some more.
But God is here to stay.
Regarding the Catholic Church's interpretation of celebacy for priests, I don't find that interpretation in the bible. However, if you make a choice to belong to a given church with certain interpretations then I think you cannot force your way in and change the basic tenets.
Find a church that adheres closer to what you believe in. There are 34 thousand different Christian sects to chose from . .. . .surely one of those would match your beliefs.
For instance, my kids attended an Adventist School all through elementary school. Their curriculum is excellent. The teacher was excellent. It was a small school - 1st to 8th grade and about 15 students. Lots of individual instruction. Lots of great field trips. We did a Chrismas musical every year. I miss it - they closed 3 years ago. But did I subscribe to their belief in "soul sleep"? That after we die, we sleep until Christ comes again? No. Did I subscribe to their belief that there is no Hell? No. But we all prayed together and raised our kids together and I never tried to change their church. We were "guests" so to speak and I chose their school system for it's excellence. But I would never dare to try to change their beliefs. The same would have happened if my kids attended a Catholic School - which if I lived in a bigger city, I would have consider as their schools are excellent also.
I just don't think it is right to try to change another church's long held tenets.
Even if I don't agree with them.