All I have to do is skim any privacy policy these days and virtually every cloud service has written theirs in a way that I can pretty much guarantee they're selling my data to someone.

I picked up electrical engineering as a hobby because I want a smart home but there isn't a single IoT device on the market that I can trust won't phone home to sell my data. On the bright side I've found soldering isn't too hard and prototype size batches of PCBs are cheaper than ever.