Been renting games since about 2014 on Gamefly (also in the late 90's/early 2000's from Blockbuster)
As long as I play at least 4 $60 games from Gamefly in a year I'm saving money annually over having bought them instead so I think it's a ridiculously good deal.
I've also been able to take risks on games like No Man's Sky without feeling burned or play games I normally wouldn't like:
Dishonored 2, Yakuza 0, Watchdogs 1/2, Rise of the Tomb Raider, Mafia 3, Deus Ex:Mankind Divided, Doom, Far Cry 4/Primal Just Cause 3, Need for Speed Rivals, Assassins Creed *Insert all* etc, etc, etc, etc.
I would have only experienced a fraction of the games I've played if I didn't rent from Gamefly. And I mainly only play single player experiences, so unless I know I'm going to go back to a game multiple times, (i.e Witcher 3, The Last of Us, Uncharted 4) I don't buy them.
If I buy a game, that means that it's something I really really feel am going to be invested in.