It's amazing how much the extra screen real estate helps.
Other than that, I've bought surprisingly little in the last two years other than food, clothing and gifts.
I can say unequivocal that when I eventually have to take it back to the office, a) my non software developer team members will drool, b) I will buy myself something because gaming (and everything else) is fantastic on it.
For gamers I'm sure there's better but the 38UC99 is quite something. Now it's already three years old (or even older?) so there's probably better at the same price point now?
Thing is I've seen co-workers with these, and buy call accounts they love them, but I've never really been blown away by them.
The 144hz refresh rate is nice, but wasted on someone who just writes code all day.