Now I assumed I would agree with you, with a few carefully-constructed caveats, but I am thinking I will need some detailed explanations.
First off- I concur with my esteemed colleagues and I guess have to beg to differ, my Glocks and experience is that Glock is basically the easiest gun in the gun-verse to take down , at the very least vastly the easiest I have ever come across. That's basically breaking down to being so quick, click clack clang its done. My Shield , is actually a pain so far to take down - I assume it's because of the guide rod assembly / recoil spring is so tough to deal with (Necessarily so because this smaller gun needs the stiff spring for operation and reliability.)
now I am a big-time Glock fan, and my roots go back to my Dad who was one of the first dept's to go to Glock in the late 80s. I learned on his just as he was learning, and have been a Glock guy growing up until I bought my own very first gun, a Glock 23. Love it and still do... and assumed I would CCW it. But it's a little bigger than is completely concealable for my person (I'm not a big guy, and it prints quite a bit, especially in Florida heat clothing.)...plus I hate to admit it but it was a bit heavy. Not HEAVY, but when you have shorts and a T-shirt on, you have other stuff in your shorts, plus the G23, and especially with you have 2 loaded 15-rd mags to back it up, the weight was noticeable. Not UNMANAGEABLE but certainly a little bit uncomfortable.
I chose the Shield over a G27 or even 26 because the Shield to me is a perfect CCW gun. I decided to go 9mm over my normal 40 but still didn't really want the G26. The Shield checks so many boxes on "the list" of things you'd want or need or a dedicated every-day-carry gun - which is what I wanted. I'm sure if I bought a subcompact Glock, 9 or 40, I'd be happy with it, but I LOVE having the Shield.
Back to takedown- just today I had a major issue in re-assembly.. and the Guide Rod Assembly is damaged. I actually had to call in to S&W and they're sending me another. Now my gun is not "out-of-commission" but I wouldn't tempt taking it down again for no good reason... and it's only 6 weeks old, this was like the 3rd time I broke it down. First time was fresh out of the box, which I guess went okay. Second time was after shooting to clean it , and I had a problem with the rod and getting the slide properly installed again... but it went on. This 3rd time, it was obvious the guide rod assembly was pretty bent up/rough on the end (which butts up on the barrel lug area.). . My Glock never had a second though in reassembly , and while I replaced the guide rod assembly after 4 years of owning, it was strictly preventative and because it was cheap.
I love Glocks, but i LOVE my M&P Shield for EDC/CCW. I might have a Glock in my hand come SHTF, but I'll have the Shield IWB...