As an engineer, what is something you never fail to enjoy doing?
For me? Solving problems.
I know I have to type more or the answer will get collapsed, but I do enjoy solving problems, and the tougher the problem that I actually solve, the better the feeling.
Simple example, while I was working for the government, it somehow became my problem to set up an older system baseline at a land based test environment and I was also really given no budget. I was able to quickly determine I didn't need a full suite of hardware (say, instead of the usual 5 oracle computers (been a while), I could get away with just one) and there was no reason to buy new equipment.
I told my support contractor to buy the hardware used off ebay. This was a very strange and uncomfortable move for the U.S. government because buying used stuff just never happens. But, with a little due diligence and purchase of service agreements to maintain the hardware, I managed to build a suitable legacy baseline to support the program.
Early in my career, I troubleshot shipboard equipment. I was the one that they called when no one else could figure it out. One problem stumped local techs for over a month. Granted, it was a tough problem to solve. I flew to the ship (carrier) and found the problem in 1.5 days (back plane wire routed tight against a pin that bit just enough through insulation to make the problem practically impossible to troubleshoot). Bent the pin over just a tad and boom! Equipment functioned again. Walked away from that solution feeling like I was walking on air.
OK, that should be enough rambling to keep from getting collapsed.