Well let me think some reasons to actually support Valve:
- Supports open source
- Doesn't try to fuck up their customer base
- Produces nonrestrictive hardware
- Invents things to make gaming better
- Their own games actually optimized and work on older hardware
- Optimizes the gaming experience and helps 3rd party developers to be successful (literally opposite of Nintendo)
- Customer support actually work
- Non invasive opt in data collection / telemetry to make products better
- Filters away the adware customer is product bs
- Supports older hardware by updating / upgrading drivers that original manifacturer doesn't anymore (less evaste, more opportunities to game)
- Developed SteamOS (Linux distribution) to keep Microsoft from vendor locking gaming