I've read all the replies. Thanks, everyone, for your input.

I do agree that some younger men can be surprisingly mature, while some older men can be quite immature. Maturity is definitely attractive to me.

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Years ago, I got close to a Singaporean guy three years older than me. We liked each other, but I was put off by how he treated his parents. His dad was late picking us up one day, and he spent the whole car ride nagging his dad. He couldn’t drive himself because he’d get carsick, and when I asked why he was still living with his parents, he casually said, “Then where would I get a maid?”—referring to his mom. That was a huge turn-off, and I didn’t continue seeing him after that.

Then there was another guy who pursued me when I was 19. He came to my parents’ house, introduced himself, and promised he would take care of me. He said he could cook, clean, and do laundry, and he wanted my mom to feel reassured about letting me be with him. He was 18 back then.

So yeah, maturity and character matter more than age.