This is where I stand. I don't feel like I need to tell people, I need to show them, set a good example. If someone asks my personal opinion, I'll give it to them, but I certainly won't pound them over the head with damnation if I don't agree with them or if I personally feel it's morally wrong. There are certain things that I feel strongly about, and I feel like I'm right about them, but as long as you don't push it on me, I'm good with that. It's up to the good Lord to lay conviction on their heart.
I'm a Christian, but I am not a regular church-goer, the Lord knows my heart. Church brought me much frustration, even anger. Not the actual message being preached, but some of the people that made up the church. People worry too much about others instead of worrying about themselves. Church politics, gossip, I'm done with that.
Example...I once played in the praise band at a church. Not something that I sought out, I was asked to by the pastor's wife who sang and was the director. I received an anonymous letter (although I think I knew who sent it) asking me how I could praise the Lord on Sundays, but play in a band (sometimes in bars) Friday and Saturday. I take music seriously, and if someone is paying me, I feel like I should be 100%, so I don't drink at bars when I'm playing. Certainly I may knock back a few when I get home, but you'll never see me playing music publicly and drinking my ass off. What business was it of this "cowardly Christian"? I immediately told the director I was done, told her why, and she understood, she couldn't believe someone actually did that and did it anonymously.
Another one...I was an elder and SS teacher at another church. When my youngest started playing alot of travel baseball, I wanted to be there. I always arranged for someone to cover for me when I wasn't there. The pastor did have the guts to talk to me face to face, but told me the ballfield was the wrong place for him or me to be on Sunday morning. I agreed to disagree. Resigned everything, and left. My membership is still there, but haven't been back except to play music at a wedding and a few funerals.
I could give numerous other examples, and it's just not something I want to be a part of. Live your best life and be a good example. You don't have to tell them, show them, and above all mind your own business.