Hard to give only one answer. It would be Switch AND PC for me.
I grew up with SEGA, Nintendo and PC all in parallel (My parents divorced, and I had an NES at my dad's place and a Master System at my mother's place, plus a PC at both), so in the end it's more like Sega gaming got absorbed by the other two along the way. I also had 2 Playstations (PSOne and PS2), but since the third one I didn't see the point anymore as it's exclusives were not appealing to me and almost all the rest was coming to PC anyway...
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454 List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/
Free Pc Games thread: https://gamrconnect.vgchartz.com/thread/248138/free-pc-games/1/