While I agree that makeup has its limits, and a point where it becomes too artificial, I think the common eye often doesn't know what's makeup and what isn't since it's become so normalized.
I find the most interesting beauty bloggers to be the ones who have problematic skin and aren't afraid to show the dramatic before and after images of what makeup can do. The "no-makeup makeup look" is a very popular trend with many women, and it's fascinating to see how dramatic and even life-altering natural makeup can be.
A group of about 6 of us CC'ers had a meetup last year, and the people there could see why I wear makeup. I have a long history of skin problems (acne, rosacea, psoriasis, eczema -- the dermatologist even said she doesn't think it's any particular thing, but a combination of all of them.) Many times it's due to things you can't control, even though others on the outside will just tell you to "just wash your face, stop eating junk food, and stop wearing makeup."
Sure, all those things can make it worse. But when you've tried to eliminate as many outside factors as you can, some of us are just not born with socially acceptable skin (and nowadays especially, you really don't want to look like you have something contagious, even when it's not.) For example, many people with psoriasis are mistakenly seen as having leprosy or some other dangerous skin disease, and are treated accordingly in public.
The people at this meetup group got to see my natural skin in the evenings, and there is a stark difference (even when I'm having just a minor flare-up.) I'm just thankful that I seem to have found the right products to allow me to pass as somewhat normal during the day. I've even had a few people say, "I really like that you don't wear makeup," which to me, is the ultimate compliment, because they obviously can't tell. I don't go outside without it, but when I'm at home and not going anywhere, I don't wear it, to give my skin a break.
I've always had a heart for people with skin issues, and pray for the ones I see on YouTube regularly, because I know how painful and embarrassing it can be.
I've also always harbored a secret dream of studying to be a makeup artist who specializes in helping people with skin problems... Maybe someday.