Sure I have heard this from my grandparent’s generation when women frequently stayed at home after kids and didn’t use their degree in the workplace. In today’s economy with 2 income families the norm to live a comfortable life, I wouldn’t count on a sugar daddy or mamma for a decent life. Everyone needs an education here.
If I had a son or daughter who thought they could get by on their looks and skip an education, I would warn them looks fade. Someone who picks you primarily based on your looks will move on when they do fade. Also, people tend to marry someone with an education level similar to their own.