My brother wasn't a jock but he was cool and smart. Being compared to an older sibling just sucks. Did you actually have friends you could play D&D with? Jealous. I only found out about D&D a few years ago. Looks like the coolest board game ever. Geeky coolness.
I did have a couple of friends that played with me when I was younger, after junior high it was my youngest brother, and the oldest brother (I have two older brothers). They would have friends that would join us though, so we typically had 3-5 people playing a campaign which was pretty cool. We used to have these awesome campaigns that would run through the night, and into the morning and it was quite a lot of fun.
I remember at 8 wanting to play, but my oldest brother wouldn't let me because the older box sets warned that the game was for players age 9 and up
I started playing at 9 and continued into my 20s, it was a lot of fun - I started back up with my kids briefly, but now have my oldest brother who is interested in playing over facetime which is awesome.
My other older brother that was a jock tried to play D&D a little bit, but he was more into sports at the time. He was good at them too, he was really popular and the coach (also gym instructor) really liked him. I think the instructor wanted me to be more like him, so he tried to push me. I dunno, old school ways of trying to get a person to change were pretty ****ed up, what was considered acceptable back then would probably get him fired now. I mean, back then they could swat you with a paddle.
I will say in my brother's favor, it is likely one contributing factor as to why I was not bullied very much in school, he was popular so perhaps people left me alone due to that. It may have sucked in gym class, but who knows what school would have been like without having him there.
But yeah, I'm glad I had dungeons & dragons back in he day. Video gaming was okay, but not quite up to scale like it is now, I did enjoy reading novels back then but it was not as interactive unless it were choose your own adventure style books. The Internet was barely a thing and dialup to a BBS would have been long distance for me in the 80s. Back then, D&D provided an escape from the mundane, and a way to be among others in a fantasy setting.