You're future-proofing with Xbox Series X. The tech in it will stand the test of time more than the Xbox Series S. There's also the disc drive and larger hard drive. Also, 4K television sets are getting cheaper and cheaper. Unless you're really strapped for cash in electronics, you'll probably end up with a 4K TV in a few years at least. I'm getting my own 4K TV this year or next year because a decent one is between $300-$600 now.
Lifetime Sales Predictions
Switch: 144 million (was 73, then 96, then 113 million, then 125 million)
PS5: 105 million Xbox Series S/X: 60 million
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima