Easy answer Religion sucks, Christianity doesnt.
Religion is a set of rules to follow "Thou shalt and Thou shalt not.
The word Christianity, has been adopted by religious groups to make themselves look good.They try and cause people to Follow Jesus Christ like they follow Buddha, Shiva, Krishna, Mohammud, etc and follow is the problem with religion, Followers.The word Christian only appears 3 times and it was invented by non believers in identifying the disciples for preaching about Christ therefore Christian is a label placed on BELIEVERS in Jesus Christ, not followers.
Christianity in the true sense is not about belivers in Christ following Jesus Christ, but Jesus Christ coming and living inside believers giving belivers his Godly authority over the world, thereby making believers GODLY.
Ac:11:26: And when he had found him, he brought him unto Antioch. And it came to pass, that a whole year they assembled themselves with the church, and taught much people. And the disciples were called Christians first in Antioch.
Ac:26:28: Then Agrippa said unto Paul, Almost thou persuadest me to be a Christian.
1Pe:4:16: Yet if any man suffer as a Christian, let him not be ashamed; but let him glorify God on this behalf.