I still have my gameboy and play with it often enough. Lol, I don't know how your mother can see that you need to "outgrow" it. My grandfather, before he left, gave me his old nintendo 64 and he had played it nearly every night
gamers run in my family I guess. But my mother would never get rid of my xbox (the old one
old school) because she knows I'd legit kill her. Anyway, I've had it since I was 5, it's a bit part of my life even if I can't get games for it anymore. Even if I upgrade it's staying. But, perhaps you should ask your mum why she thinks it's something to outgrow.
P.S. A mate of mine started having his voice cracking at 9, it went higher so thank God you're's is getting lower