Generally, being excluded can feel terrible.
But as a leader and/or creative, you need to exclude people. Whatever it is you’re building needs to be for someone. By necessity, it’s not going to be for some other people, since there is nothing that people like universally.
By choosing who it’s for, you’re also choosing who it’s not for. The quicker you can get comfortable with this fact, the easier it will be to share what you create for those who need it most.
PS- You should still never be a dick about it.