I am an ex Eve player. I sometimes log-in as an Alpha to check my messages or see if the graphical models of the game have improved, but that is about it.
My observations.
1) Lots of my old buddies from 2004 have since have left the game due to various reasons, but mostly boredom. Me to.
2) Toxic players can make the game a misery.
3) Price, £15.99 a month vs World of Warcraft's £9.99! Seriously!
4) Lack of innovation over a decade. Game has stagnated and is obsessed with selling you skins and boosts...
5) Competition, we have No Mans Sky (one time payment), Elite Dangerous and probably many more that offer similar experiences for far less cost.
6) Eve can be like a job, recruiting staff, managing finances of your corp., retention of staff, logistics, blueprint purchases, building up to capital level star ships. It was a real time sink.
7) It was no longer fun.
I miss the era of 2003 and 2004 when the game was new, and people enjoyed this fresh experience. Now, it is over 20 years old and CCP sold the IP to the highest bidder. Which was not in the interest of their players.