Try to appreciate your family for as long as you can, since you'll never know when they're gone.
In 2004, when I was 23 years old, I lost both my parents and a sister in a car accident. We had a really nice family and great parents, never expected this to happen. It caused me a depression that lasted almost 7 years.
Personally I wouldn't want a girlfriend that wants to become a mother, the pain of losing someone very dear to you is intense and I wouldn't want another depression that lasts as long as my previous one.