Android is very good. I bounce between a 950 & Galaxy S6. The security issues...yeah, they've had some exploits discovered (that no one was exploiting). Apple has had a few very high profile, legitimate spy tools for governments discovered recently. If WM10 had more market share, I suspect we'd be hearing about them too. Point is, complicated OS's will have holes, unfortunately. If you buy legitimate apps from the Play store, you're very well protected.
What drives me nuts about Android is how every app thinks I need to be notified of everything that happens in their app. A lightning strike occurred 7 miles away...seriously? (Spend 5 mins finding where to turn that off...) And it goes on and on... Twitter on Android is littered with Ad's, and 'While you were gone' sections that I can't seem to turn off. (None of that on the WM10 Twitter app.) That's the stuff that drives me crazy. I actually think that Android has come a long way in the last few years as well. I do still have the occasional slow down, nothing crazy, but it happens. WM10 also has those issues.
Having said all of that...WM10 pre-AU was terribly unstable. Post AU has seemed to bring along with it performance improvements and stability. I'm using my 950 today again, and we'll see how it goes.
Its a phone, and you're on Verizon...I think you'll have to move to Android/Apple soon. That's just the reality of WM10 and Verizon. If you want to stay with WM10, I'd wait to see if HP & Verizon are going to work together. If no, then its time to move on.