I think that actually teaching people is the idea there, not necessarily just having a your cfi...and depending on what you're doing as far as flying right now, getting your cfi can be a pain in the ass (you may really have to get your head in the books)...
3000 hours is a lot of time, depending how you got that time and what you're future goals are, I suppose getting you're cfi and then not using it may not do too much for you.