Hello. I'm, erm. I'm 48 and play Minecraft bedrock edition on Nintendo switch with my son (and sneakily when everyone's gone to bed).

Don't judge me!
I feel good I've got that out!
Seriously, I used to pay on a spectrum 48k. Still got it with, all my games including an few that are definitely only backups of the original bought games,, honest! I've played on commodore 64 which was the only competition to the smaller memory spectrum 48k. Yes, games run on similar memory than a modern word or excel document needs. It will still work too since I replaced the power pack with one from a Spectrum 2, + or QL. I think the spectrum beat the commodore for quality of games. My mate's bbc b was good for one game that wasn't on any other computer at first, elite. I have the spectrum version that came out later.
I then played streetfighter a lot in year 2 of university, house mate got one with grant cheque. Mega drive. It was the latest thing!
Now I'm contemplating whether to buy my own Nintendo switch. I actually like Minecraft despite my son completely humiliates me on pvp. Creating something on creative with him has him nearly completing his second, huge mansion/ base, complete with decorations before I can finish the roof on my very modest 3 room house!
He beats everyone on Mario kart, including his 17 year old gamer cousin. Seriously number 1 and increasing his score gap every round. That's even with his little "I'm going to humiliate you by not starting until you've finished lap 1/3 possibly 2/3 too" trick. I can't even see the game as fast as he can. He's almost 9 years old. He's finished luigis mansion3, another Mario game, two Lego games and no longer plays them because its too routine for him. "Oh I go into that room now and slam that ghost by doing..."
I bought him Minecraft dungeons with dlc packs. He's bored with it. He's got so many upgrade points thingies he can get a new weapon or armour and max it out with upgrades without running out ever.
Anyway should I get switch and Minecraft? Any really good, more adult ish games like Minecraft or open world on switch? Any good deals out there?
Also, what game could get a 9 year old Minecrafter off Minecraft occasionally? Legend of zelda perhaps, but which one? He's a 9 year old boy who's either playing Minecraft, watching YouTube videos of Minecraft, talking at 100mph about Minecraft or he's bored and grumpy having been forced off his switch and tablet!