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Exactly. And I'm not convinced that many on here would like their 18-year-old child to be in a similar relationship, nor would they approve of a straight man in his 60s dating an 18-year-old young woman. 
If you check my record here, you'll notice I'm rarely defensive about my own choices because I'm completely comfortable with them.
Sure. Other people do it all the time. But I'm not "judging" you based on my "life experiences or opinions." I am speaking to the well-established difference in intellectual and emotional development of someone who is 18 versus someone who is in their 60s. 
I haven't "attacked" anyone. You're choosing to take my observation of scientifically proven developmental distinctions as a personal attack. Saying an 18-year-old hasn't finished their full intellectual and emotional development isn't saying they're immature or dumb. Quite the opposite. It is noting what the science says. They are exactly where they should be developmentally and intellectually. If I said a 30-year-old was acting like an 18-year-old, that would be saying the former was immature and possibly dumb. 
This isn't about pettiness. You want to be lauded for dating someone who could be your grandchild. Some people will be uncomfortable with that. To me, you and others are using gayness as an excuse for engaging in relationships that a plurality of adults find to be questionable. I find famous actors in their 40s and 50s dating 19- and 20-year-olds to be creepy. 
 
I don't watch much porn, but when I do, it tends to feature men in their 30s and above, because I don't find people younger than that attractive. Aesthetically, I understand their appeal, but it doesn't do anything for me erotically. Especially if they're hairless or in scenes being portrayed as teenagers or frat bros. 

Girl.... 
Clearly, I hit a nerve and you obviously do care. 
If you think this forum is not judgmental, please read it more closely, as providers are regularly derided for their appearance, their age (if they're over 30), their bodies (if they're not ripped), or for having tattoos or piercings. Are you leaping in to tell the members judging them, or is it only when your own tastes are questioned that you get in a huff? 
18-year-olds and 60-plus-year-olds are perfectly legal to date, marry, etc. If that's your preference, by all means enjoy it. But as someone younger than you, the idea of being with an 18-year-old strikes me as somewhere between boring and creepy. When straight men do this, they are rightly criticized for choosing to be with young, less powerful, less savvy people whom they may be able to take advantage of. 
Regarding who is well-informed. It's clear to me that you don't understand what the prefrontal cortex is and its role in human development. So here's some information that contributes to the growing number of people who are uncomfortable with age-gap relationships involving people in their late teens and early 20s. https://my.clevelandclinic.org/health/body/prefrontal-cortex#what-is-the-prefrontal-cortex-pfc-