"...No one comes to the Father except through Me..."

As a Christian, do you believe that only those who accept Christ as their Savior will go to heaven? I do and it makes me very sad for those who are not Christians. I've never understood Christians who are angry or antagonistic at non-Christians. What does your church teach on this matter? I understand that some Christians here attend Universalist churches, and that such churches aren't Bible based. Is the purpose of attending UU churches, as a Christian, more to share fellowship with other spiritual people? Or is there something to their services that is similar to Christian beliefs?

I've hesitated to ask this question for years, due to the chance that responses will come largely from atheists and will be harsh. I've read DU and other political sites for many years. I've rarely ever posted because I don't have it in me to carry on dialogues that are hateful and/or unkind. I'm the poster child for snowflakes when it comes to confrontation. I'm fine with having my beliefs challenged. I just can't do the hateful exchanges.