It can be a really fun hobby, I am sure you will have fun with it.
My Dad has been diving since he was a kid, and is part of his fire dept. dive squad as a dive chief, so it was quite hard to avoid scuba-diving becoming one of MY hobbies as well. :P
Let me give you a word of advice: if you ever get the opportunity to dive a treasure dive... no matter WHAT you have to turn down and leave at home to go do it... DO IT! He has been bugging me for years about not going when he had the chance everytime diving is brought up, which is often, and he isn't even a huge treasure person, not to mention the fact that this was like 2+ decades ago!
Good luck with your new hobby and the treasure that I hope you find.
~Dave