What an idiotic perspective. Microsoft has supported W10 for literally 12 years at the cutoff date. Show me another software product that receives TWELVE YEARS worth of free support. 30 bucks is fair enough. For enterprises this is play money, if you are a private, you could upgrade fucking 7 keys. Which means, you didn't need to pay a fucking cent to MS since 2007. No one has ever matched this kinda support. Ten percent of this is considered fucking generous.
And herre is a thought for you. The reason why windows is full of adware and spyware is precisely because of dickheads, who won't pay 30 fucking dollars EVERY TWENTY YEARS. This is your fault.
To be fair, that really depends what you use your PC for. Looking at youtube without a profile, and reddit and the news, playing music, offline games. You will be 100% fine. If you have to log into somewhere with sensitive data, don't. But as a secondary device you PROBABLY will be fine. Requires significant discipline, to not accidentally log into facebook on it though.