Feeling Insignificant

I feel like I could stop existing in my husband and daughter's life and they would be okay if not better. I never feel like I don't bring anything to the table, I'm certain I don't. I went from living with my mom at 17; helping with bills, groceries and my younger sister, to being 18 and married, then 20 and pregnant. I can't fix a tire, I have no college degree.. What am I?

I love my husband and daughter, my heart aches with how much I love them!!

I'm just not sure I'm a person worth loving and having in their lives when I have nothing to contribute.