So I'm a current PPL student. Dabbled a bit 10 years ago after being made redundant and getting a chunk of cash. Thought of training full time for CPL and flying as a change in career, but chose to carry on with existing career to get to a point where I enjoy it as a hobby. Fast forward to now - everything has come together very nicely and I have the money and the time to do just that.
I am now loving every minute, having recently restarted. Whilst I cannot for one minute imagine getting my licence and then stopping, I am perfectly accepting of the fact that at some point it may no longer grab my interest and I may well get to the point where I have satisfied my lust for learning a new skill. If so, I have no problem in that whatsoever, but as I say, right now, I cannot imagine that happening. Every time I think I can't get more excited by the whole experience, it just gets better and better.