I promise you, the only people who hate your boundaries are those who want to continue to disrespect you or take from you. Whatever disrespect you tolerate will continue. Takers have no limits. Your boundaries are their limits.
Being able to communicate is a valuable skill.
I know people who are great at what they do, but can't explain it.
As a result, their clients don't see the value and pay them less than those who aren't as skilled.
Don't let that be you. Learn how to communicate.