Timboli: Not for me, never taken advantage of it, and likely never will.
But a big part of that, is the fact that I don't buy a game with the notion that I can always get a refund, plus I buy games and it will be way beyond the return duration before I get around to playing them, and perhaps discover something worth getting a refund for.
Mostly though, for me it is about never paying too much for a game in the first place, and just accepting the risk.
And I look to offset the outlay by giving reasonable value to any artwork and soundtrack. If all else fails, I can at least enjoy them. Then there is the notion of encouraging developers etc.
And while I resist paying too much for a single game, I do spend a lot on games overall. I will sometimes make exceptions for games that come with lots of extras, including DLCs ... but I don't go overboard. And sometimes it is just about perceived value for money.
Perhaps, if the over abundance of great games at cheap prices was a not a thing, and my finances were minimal, then I could see the merit in Refunds. Not to mention all those free Epic games, and the occasional GOG freebie, etc.
And it is likely down to desire too. Most games I am interested in or allow myself to get interested in, are available at some point for a fair price. So I rarely make purchases I regret, and those few I can live with. Many games have some redeeming factor, and if you didn't pay too much, easy to accept.
You strike me as somebody with a nice amount of wisdom. Idk. I just wanted to say that. You're cool.