If you mean to keep a copy and be able to play it again anytime in the future, then yes I'm with you. However, most of the games are either thrash or doesn't offer much replay value, which means that once you're done with it that will stack up somewhere and collects dust.
One point though is you can trade games that you own, which has some appeal.
People used to bring the same argument for music streaming vs buying a CD or digital copy. See where that brought us.
Convenience wins most of the time.
It's not like we're talking about charity here.
I have the feeling this is peak microtransaction. They've found out that people are likely to spend small amounts over time then one big sum at once and now you don't even own the game. It became the microtransaction.