pregnant women wearing heels

Is it just me, or do I think it's dumb? I saw a very pregnant woman pushing a cart and I could see she was struggling. I felt bad for her thinking, I know what that's like! She must've been about 8 to 9 months pregnant. Then I couldn't help but notice 4 inch stilettos on her feet! 
I was like....but why!? What's the point of wearing them when you're swollen and carrying a big stretchy belly around? 
I thought it was quite silly. And it just looks silly!