My computing/mobile ecosystem has been mixed for a while now. I've been a gamer since my college days, first on an off-the-shelf HP and then on two rigs I've built myself (built #2 in '09 and upgraded the internals in '16). College is where I got my first exposure to Apple too, thanks to the iPod.
I started off slow with Macs though, buying a 13" MBP (late 2009 I think?) and then a mid-2011 Mac Mini. Buying the mini is what turned my ecosystem into what it is, where I use my PC nearly exclusively for gaming and my Macs for general-purpose/everyday tasks.
Along the way, a 2nd Gen. Apple TV replaced a 1st Gen. WD TV for streaming/entertainment tasks and I also bought into the iPhone world when I ordered a 4S at launch.
Eventually though, a fast-developing interest in photography necessitated a desktop upgrade and so the Mini got replaced by a 27" Retina 5K iMac (late 2015).
Within the last 9 months however, several real life changes have drastically curtailed my photography work and with that expensive iMac now relegated to the same general-purpose, everyday computing that my Mac Mini so ably did (at a much, much cheaper price), the costs-benefits + Apple's recent QA/QC issues of the last few years have me planning to replace both that iMac and my 11" MBA with Windows machines when they die (have extensive experience with W10 at work have have found very few flaws with it)
Despite using both a 1st Gen iPad and 1st Gen iPad Air, the whole concept of replacing a laptop with a tablet never really took off for me, otherwise, I'd keep Apple around more.
My Mini is still in storage and when the time comes, will get brought out, updated and will see new life as a media server though (I'll eventually get around to replacing that Apple TV too, given that I've cut the cord a while ago)
As far as software goes, the only real cross-platform work I do is word processing. For that, I use Google Docs (when something needs to be published or otherwise needs more formatting done, I'll drop that into MS Word on the iMac - got the whole Office Suite courtesy of my O365 subscription through work)
My phone though has been and will continue to be Apple exclusively - the ease of use/convenience afforded by the 4S, 6 and now the XR I have can't really be beat IMO. About the only thing I'll miss when I eventually replace my Macs is the convenience afforded by iCloud Keychain - though that can be easily replaced by LastPass or another similar PW manager (syncing music, books and such can be taken care of w/my Mini - have used iCloud for backup purposes for a while now)