Sigh... It's not surprising that things as important as critical security updates aren't important to Android users. I get that... if they were important, you wouldn't be on Android in the first place. However, attempting to down play this reality just makes you look foolish. Also, before you go on about updates coming through the play store, let me know how that works for kernel level vulnerabilities.
Google issues kernel level security updates monthly, and indeed so far the S8 has been reliably getting these. This might be a reasonable criticism of the Android ecosystem as a whole, and long term support is questionable, but this point is unambiguously false so far in regards to the S8. Indeed, the S8 is getting more regular security patching than iOS is so far.
You claim you'd be missing a lot by switching to iOS? Yet, you're unable to even provide a few examples to illustrate your point? I know, micro-managing the preferences to your various widgets is probably very important to you.
Not speaking for that poster, but I posed a pretty big list in this thread already (Consumer Reports Rates Galaxy S8 Over iPhone 7 as 'iPhone 8' Rumored to Address Most Shortcomings), which certainly aren't "micromanaging widgets", but are common core tasks that iOS does badly.
Apple trickles down features at a snail's pace....
Translation: Apple takes the time to implement features correctly and securely from the beginning rather than rushing to market just to claim to be first. There are countless examples of features coming first on Android that were implemented very poorly. Everything from fingerprint scanners, wallet payment systems, LTE chips that ran down the battery faster than the device could be charged, third party keyboards that send your private passwords and credentials up to third party servers, etc, etc.. the list goes on.
Apple took an age to implement notifications, and the implementation is still a trainwreck compared to Android. Seriously, these things go both ways. I think we're a few years past realism of claiming "it just works" with iOS. The platform doesn't clear out it's inconsistencies enough. The Apple you dream of wouldn't have done something as weird as ship flagship devices with incompatible power connectors in the modern era, but yet "it just works" applies to my Macbook and S8 who can use one charging cable, whereas my iOS devices are the odd one out.