Love isn't a religion. Love won't save you. Our only hope for salvation is repenting of our sins, accepting what Jesus did on the cross as payment for those sins, and accepting Jesus as Lord.

No, every religion doesn't encourage us to love one another. Muslims are taught to hate the Jews. They're taught that it's OK to rape married women captured in battle. They're taught that it's OK to treat women worse than dogs are treated.

Believers in karma would never help a starving child because they believe the child is paying for a sin in a previous life. It was only when Christian missionaries helped people that other religions in those countries did the same or risked losing the people to Christianity.