Common comments made about live-action remakes:
"Its unnecessary."
No movie is necessary. Water and oxygen are necessary.
"Creatively bankrupt."
Supply and demand. Audiences show up for remakes, reboots, sequels and known IP. Audiences do not show up for original movies or unique ideas.
"A cash grab."
Broke-ass film school students make "art." Major studios do not. They are a business. When they invest 10s or 100s of millions of dollars, they want a return on that investment. In that regard, all studio films are "cash grabs."
"Who asked for this?!"
Millions of movie-goers. With their wallets.
In summation: your opinions don't matter. Facts matter. Remaking Lilo & Stitch and HTTYD were smart business decisions. There's an audience for them. That audience liked them. They made a lot of money. More live action remakes will be made.