1. It makes you more attractive.
Yh more like a tourist attraction. Dont worry the male will always know how to tour.
2. You can climb steps easier: when climbing a staircase, muscles are also needed from your lower waist.
3. Your backside can make pregnancy easier: big backsides can help you move easily during pregnancy by balancing the ever increasingly weight of your baby belly, which can put a strain on your spine.
4. Big Backsides promote proper posture.
5. It can protect your lower back.
Everything have advantage and disadvantages too. Just gave a few of the positive. dont want to go into the disadvantages. you can add yours.