I use to play off and on a fair bit. Did dual account high sec mining and a lot of complexes.
I bailed when I could so the math and realized one good screw up where I lose a BS and by out days of my life. That was immersion breaking. I don’t want to put myself in a place where an infantile moron is able to retroactively invalidate hours of my life. I am not an adrenalin addict so when my corp moved to low sec I eventually bailed.
Then, I sit in a station and chat with people on the other side of the world, sometimes soldiers in Afghanistan.
The lowsec/nullsec thing I find really appealing, but I can't do it because the dog wants to go outside, the phone rings, etc.
I really didn't worry too much about it, because making ISK wasn't difficult for me. Copying blueprints was the equivalent of printing money. I also had a number of research agents churning out expensive datacores. It was very low effort.
After I got my standing high enough, I rarely did missions on my own. But, I enjoyed teaming with a few friends. I'd let them have the mission rewards, and I'd pick up the valuable salvage from my wrecks and leave the rest. I'd use a heavily-tanked Dominix and get up close and personal, or pick them off from 100 km away in a Sniperthron. After a while, I didn't even bother with salvage and used an assault frigate. That was probably the most fun.
I made a fortune by buying new BPOs when they were first issued, and having everything I needed to build the first few versions of a ship as soon as possible. I'd sell them to early adopters that were willing to pay a large amount of ISK for the first ones. It only backfired on me once, with the new T3 ships that required successful invention. The market collapsed before I could sell my 2nd and 3rd ones, because people were not accounting for the implicit cost of a datacore.
Shortly before I left the game, I bought a small carrier and outfitted it with fighters. I even started and trained an alt for the express purpose of providing my own cyno field. I was discussing a venture into low-sec with some established corps, but then I lost interest.