Right, I'm with you. I can totally appreciate what even small compromises can open up.
My wife's laptop just got compromised a couple of weeks ago, and I've been diving down the security rabbit hole of figuring out how it happened, what's going on on my network and my computer and phones etc. It has been a rude awakening as to the sheer amount of blind trust I've been placing in all my devices. After watching what network traffic comes and goes on my laptop and how much info gets recorded by the system I've come to the conclusion that modern OSes and browsers that aren't explicitly privacy focuses are basically spyware. My new mindset is 'assume everything is compromised at all times and treat it accordingly'.