A lot of stuff I write seems the same too. I usually will write if I think I've had a fresh perspective about something or I think of a different delivery approach. We never know who might read our stuff and get something from it.

Most of the time my writing is cathartic. I write because I need to write. I also hope that I might be helping some people with ideas, debate, etc. Ultimately though I write because I feel the need to write.