It's a matter of knowing what makes YOU happy.
I go nuts in one place all day...I also go nuts when things are predictable.
But then, there is the flip side..I would NOT venture to say engineering, or drafting isn't rewarding...NOT at all.
I just made a choice that made ME happy.
I have had occasion to look back and wonder, but then, I'm sure I'd still have occasion to do the same if I were sitting at a desk.
If I decided on lemons a long time ago...now I make lemonaide.
I still find myself reading up on science, tech and engineering break-throughs.
I still enjoy what I do.
I still want to get that software! (She'll kill me yet)