I made the jump to tech diving last October, I've never looked back.
One thing you will find yourself doing is buying gear by the truckload. Every time a good deal comes around on a set of backup regs or another set of doubles, you'll end up buying them(just in case).
You will meet someone (hopefully your instructor - mine is) who's skills are so beyond yours that it seems impossible you will ever catch up.
You will become a much more aware diver, you will anticipate problems and their solutions.
You will become addicted to scubaboard / TDS, and it's many characters.
Just a few things to look forward to. The post earlier about having a reason to do it is true, but "because you can" is a reason. My reason was so I could go see really cool deep wrecks in the great lakes. Then recently I went in a cave....... That cost me about 2 grand in a couple weeks. Enjoy your newest addiction.:shakehead
If you've learned anything from this thread, note that being closed minded isn't conducive to learning. CCR's aren't the devil, I'd love the opportunity to use one.