Yes friendships end, just like marriages do and even family ties. If anything friendships are the least permanent of human relationships. People come into our lives for a certain time and then they go out, sometimes it's sad, other times you can't wait to see their big fat arse walk away.

"We submit to the majority because we have to. But we are not compelled to call our attitude of subjection a posture of respect." Ambrose Bierce