I much rather be concerned about security than privacy.
It's not "just a bunch of computers". It's potentially putting a lot of leverage in the same hands. Here are 3 examples.
As a woman, it's nearly impossible to get a job when you're pregnant, so it's better not to let anyone know during the job search. If you have HIV and people find out, they freak out thinking you'll infect them right away. If you're chronically sick, do you want insurance companies to know that ? No you don't, because the price of the insurance policy will "magically" be higher for you. Privacy has it good sides.
Not a week goes by without a major hack of some sort hitting the media, a much larger amount goes unreported. And even if the data isn't hacked it could easily be lifted using some legal instrument.
Informative advertising, better UX, and more desirable features are positives and can be implemented with only a modest amount of data gathering. Intrusive manipulative ads, dark patterns, and addictive "stickiness" are negatives enabled by excessive collection of data.
- Gmail: I'm still undecided if I will switch from this. I don't actually use email for communicating with anyone; it's really just for notifications and receipts and stuff. Beyond knowing what I'm buying, there's not much I care about in here anyway - Search: Also iffy on this one. It's just leaps and bounds better than any other service provided. I think I might give DDG a chance just to see, but I don't worry about it too much. - Chrome: I already dumped this thanks to their decisions with ad blockers. Even if I was not using ad blockers, they are forcing Chromium (not just Chrome!) users to conform to a standard that is in the best interest of their business and absolutely no one else. I can't support that. - Hangouts: this is shutting down in a few months with no clear replacement plan. My friends and I are still trying to figure out where we will go, but you cannot trust Google to run a messaging service without shutting it down these days so it will not be one they provide - Google Play Music: Already switched to a self-hosted Plex server. Other than the horrible bluetooth support in their Android phone, it's a superior experience in my opinion - Nest: I may switch my thermostat away with them deprecating their APIs. A few IFTTT integrations I use are going to stop working and that is extremely frustrating. - Home/Assistant: This is the one where privacy may make me toss them in the trash. I was satisfied initially with the security and the third parties supporting that it's only recording the keyword and anything said after, but this one is admittedly bugging me. - Calendar: I only use this to remember birthdays and for keeping track of when TV shows are airing. There's no reason to get rid of this unless I am truly removing Google entirely - Android: This is another privacy sore spot and one where I want to switch but I would greatly miss the customization options (Nova for example) and Relay for Reddit specifically (I've yet to find an iOS Reddit app worth using). For now, I've just locked it down the best I can and turned off things like GPS and bluetooth to limit what tracking can be done.
A lot of my sore points with Google are coming from how many of their services they are killing off and preparing for them to ultimately kill off the others that I am using, honestly. So while privacy is certainly on my mind, that is the ultimate factor for me.