Is dating older guys a good idea?

I'm turning 18 soon so no need to tell me to be careful on it being illegal but I'm into older males, like... I can't date guys my age, it's a big turn off and all guys I liked were 27+ till 35-40.
I have no problem in being in a relationship with a 40+ yo. Even if it's a serious one, also from what I've noticed I attract that age group (30-40), they're mostly family friends, on the caffee, on the beach, on the bus... But would society think of me badly if I date an older male? Would he take me seriously at all?
Is dating older guys a good idea?
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