Should we find out the sexes of our twins?

Gina
Okay. This might be a little long...
After on and off infertility testing for 10 years, my husband and I finally scraped up the funds for <a href="https://glowing.com/glow-fertility-program">IVF</a>. Our first cycle worked! We're expecting twins. :)
I have always wanted to be surprised by the sex of our children. My husband doesn't care either way. But our family and friends are driving us CRAZY with questions and comments about our decision. 
"How are we going to know what to buy?!?"
Our babies will NOT CARE what they are wearing. Color preference has ZERO to do with what bits they have. I'm not a fluffy lacy girlie girl, and neither my husband or I care for gendered stuff. Our nursery is neutral (purples, greens, and cream) and we honestly don't care.
But everyone's making such a big deal about it, and it's wearing us down. Should we find out so everyone can do/get the babies what they want? Or stick to our plan of hearing "it's a ___" on their birthday?
Thanks for any polite/kind insight!