Its like white bread, you know?
The "Most Popular" music, by its very nature, will always be the blandest, most ordinary, most likable music.
Of course it won't be bad per se, just mediocre. Basically, sing a song, make it simple, so all the kids can sing along.
Pop music is always what you'll expect it to be, exactly what you'll expect it to be, because that way it guarantees sales.
Like white bread.
Sometimes I like grains or seeds in mine. Sometimes, I even think its a nice surprise to find the bread has gone a bit stiff and I have to toast it.
In the same vein, I don't want to go to a concert and hear Auto-Tune and lypsync-ing up the goona. Yes, the music quality is definitely better, but its nothing like having the lead singer get smashed beforehand and start rambling mid-song, or have the guitarist improv for a few minutes with a beer bottle as a slide, or the double bass player jump onto his instrument and play while standing on it, or the front man get up on a stage and tell the whole audience that its okay to steal his music, because the record company overcharges on it anyway, and he'd prefer that you enjoy it anyway you can.
I've seen all of those things happen, and I'd feel pretty safe placing a bet that it would never happen at a pop concert.
And most of all, I like to thing the artist I'm listening to cares more about making a good song or sharing a good message than making money or getting famous.
Just to clarify, I don't think mainstream music is bad 'musically'. I just think its uninventive, unoriginal and bland, a melange of enough stuff lumped together and manufactured formulaically to the Nth degree as a means to sell the most number of records.
If you like all that though, more power to you.