Like you, I originally started with Pokerstars, and over the last twenty years or so I have tried others like PKR, Betfred, Eurosport Poker, 888, Sky poker, GGpoker, Full tilt, Party Poker among many others, I always seem to return to Pokerstars as the lobby is so easy to follow, to find the games I am interested in.
Eurosport Poker has now quit playing Poker and when they closed the Poker side my money was transferred to their sports betting site, but as I do not like
gambling I took my winnings and ran.
PKR was another site I enjoyed but they went into receivership years ago and stopped their site, The other site Betfred I also enjoyed because they held Point games for free and when you made the Points you could save them to buy-in to
real money games or trade the points in for real cash, I think the rate was around 480 points to the Dollar.
The one common link to all the sites is I could play for Free! Without making a deposit, which I have never done, It is only recently I find more and more sites stopping the free games and concentrating on getting your money out of you.
Poker is a fun game and when it is free, that makes the fun even better.
When the fun Stops, STOP!