If you`re gambling several hours per day and every day for a long time - ...
If you're gambling several hours each day you're no longer able to see anything !
It is not a problem for some men, i even know such a man. I always say that there is no one recipe for everybody. I can answer you in common - that is how i answered before. Or i can tell my opinion for my type of gambling.
For me 2% difference of RTP - doesn`t matter. I gamble mostly for 20-30 minutes and with small sums - i don`t see if i lose $1-2 more.
Indeed, to feel a 2% difference in RTP one have to make millions of bets. It's important for gambling sites and providers, but not so much to us, regular gamblers. Overall I think looking for a slot with lower RTP is pointless, you can lose all your balance playing a slot with 99% RTP, and you can win a lot playing Mega Moolah with 88% RTP. If you had a united army of many thousands of bettors, it would matter for you, but for an individual player it doesn't.