Why does never getting closure hurt so badly?

Basically what the title says. I’ve moved on and healed a very good amount, but the fact I never got closure or the answers to my questions and why I deserved that makes the pain linger in me so badly and makes my heart ache.

It’s crazy how much being on a healing journey teaches you. I didn’t think I’d desire closure 7 months in, but here I am and I still do. Although, I’m not feeling the same intense pain I did when the heartbreak was fresh, I still feel like my heart is aching.