It is very easy to judge but very difficult to judge rightly, and Jesus tells us not to judge. So, while we have the obligation to use our intelligence to know the truth, to be realistic and make our own responsible, well-informed decisions, we need to avoid judging the intentions of those we may disagree with and who may be objectively be in error, because only God is in a position to do that.

Now, to your question. If you see some priests who are less than enthusiastic about the teaching of the Church and the value of the Sacraments it should not dismay you or discourage you. Our greatest strength and our greatest weakness is in our free will. Our free will makes it possible for us to fail, and it also makes it possible for us to repent and convert. Our dignity is in our free will, and Christ will not take it away, but he did give his life to gain us the grace that would allow us to use it well.

There are many reasons a man can stray from the Churchs teachings. He may not have been taught well in the first place, he may not have been taught the truth, or he may have been taught the truth but not grounded in the reasons behind it. He may have been taught well but subsequently led astray by reading the wrong authors. He may have made personal choices that are not in agreement with what the Church teaches and now feels the need to justify them. He may have started off enthusiastically but not received brotherly support from other priests, or answers to his questions when he needed them. Or he may simply have tired of always pushing, of the pressures and the opposition he faced, the criticism and backbiting that a priest often has to endure, etc. And there may be many other factors as well. We are human, we tire, we make mistakes, nobody is perfect. Yet God wants to use us. If he doesnt give up on us we shouldnt give up on ourselves or on others either.

What we need to keep in mind is that Christ first of all wants us to take the plank out of our own eye before taking the splinter out of our neighbors. We have to be aware of our own weakness, Whoever stands should be careful lest he fall is what St Paul advised his people. Even if we know we are now on the right path, it is all Gods grace and reason more for humility than for pride.

I think you should talk this over with a priest from your diocese whom you trust. Ask him about the seminary formation, and speak about your concerns. As long as you can get a good formation, and have men among the priests that you can count on as friends, with whom you can relax and find spiritual support, I think you should pursue your vocation.

God bless.