Growing up, I rarely had internet and even then I would mostly use the internet to browse flash games or WWE.com, and my only real outlet for mainstream info and interconnectivity with the rest of the world was through WWE. I learned a lot through WWE whether it was words, genres of music, and a bunch of other stuff related and not related to wrestling. I think that's one thing I miss, it's not like it's impossible for kids to be in a similar situation, but I just miss absorbing so much info. I guess in a way, I feel like I know too much. When I started reading dirt sheets at like 11-12 years old, reading SmackDown results, reading of the big new debuts and surprises it was really cool but now it's just that I know too much.
As for something that I miss that isn't around anymore, it's the varied presentation. I was a mark for the production-side of wrestling, the colors of the ropes, mat, the type of mat, the sound of the mat, the set, the lighting, the stage, the ramp. I just loved that shit as a kid and I would look up pics of PPVs within hours of it concluding just to see the set, what color the ropes were etc. etc. WWE was the only promotion that did that production-wise and now they don't do that so it's like damn, I miss that shit.
Whilst I'm at, I miss when WWE would run highlights of the previous nights PPV in the adverts for the encore of the PPV. It would show slow-mos and still images of all the matches with the theme song, and I remember that was my only way of actually catching up with results for years other than 2nd hand from someone at school or listening to the commentary.