Though u express it so bluntly, there is some truth in what you are saying. Some people are really into these inspirational quotes. Personally, I think they r good once in a while to serve as reminders abt how life can actually be. They can help when u r having a super crappy day (some quotes r powerful enough to temporarily lift your spirits or give u momentary courage) or super fantastic day (some quotes add more feel good vibes to your day). But yeah, to have them shoved in your face every single day- and especially when you are in a mood that is somewhere between these two extremes, doesnt add-value to life.
Good call to action at the end, one of the reasons why i think this is a good rant! Hehe :)

Btw, what inspirational quote(s) inspired u to write this post? ^_