They just don’t get it yet.
John Cleese’s advice is so perfect for creatives, “if you do something a bit original nobody gets it at the start”. You can’t be discouraged when someone doesn’t like your new idea. They just don’t get it yet.
I used to have the wallpaper on my computer of a Seth Godin quote: “All the creativity books in the world aren’t going to help you if you’re unwilling to have lousy, lame and even dangerously bad ideas.”.
No one understands an original idea in it’s first form, that’s why you shouldn’t get discouraged when people don’t like your ideas. The trick is to keep coming up with ideas, that way, when someone doesn’t like one of your ideas that’s just fine, tomorrow you’ll come up with another and the day after that another. As long as you keep creating, keep trying, and keep pushing yourself to get to that “one” person to say, “I get it”, you’ll be just fine. It’s that endless pursuit that makes it fun isn’t it?