That's because it is hollow. It never did mean anything. It simply pointed out to geeks that there were others like them out there and they were sending fun little signals to their brethren. But what it really was was master marketers selling you a bag of goods. You're simply seeing the Geek Age come to its tiresome end, as with all fads.
I'd like to think that it was more than that. The truth is probably that they just wanted to make money, but I think that at least of the people involved in the birth of comics wanted to do something truly revolutionary. And they kinda did. Comic Books are the modern myths, in a way. They began with super-heroes, but now a comic book can be anything. It's a whole new medium.
In the end, yeah, it is hollow because it got out of control. It didn't remain as a geek thing that made the jump to the mainstream once a while. Now being a nerd is rather typical. You can find Daredevil stuff everywhere. Iron Man is a household name. The companies are making billions off them, and have forgotten the people that made them.
But even if we accept that cape**** is a bunch of hollow stuff, the movies could have still been something special. A once or twice per year treat. When you walked into them, you didn't know what to expect. Now, everything's spoiled in boards, sites, trailers, etc, etc. The stories that can be adapted are fairly similar, so there's no difference between the flicks.
But really, is comic book knowledge of any real value? Its not like the more you know the more likely you will get a good job... or meet a hot woman.
Honestly? Not really. And I say that as a guy who still has a pull list. I'm spending about 60 bucks on average each month. For most that's a laughably short amount, but considering where I live and my circumstances, it's a luxury. It comes about to 800~ bucks per year (add the various annuals, extra-sized issues, etc, etc). And all I have to show for it are 5 pages of paper, strung together, that can be read in minutes. I pull most of them out of "eh, I like the character", and I keep reading the same ****, month in,month out. Some are still original, like East of West, but even indies have become boring. They're mostly writers adding gore and sex while taking shots at the super-hero stuff.
But when I pick up an older book, I can see that yeah, it's childish. It's outlandish. But it's just so.damn.entertaining. Comic Books nowadays are so obsessed with being mature, relevant, "diverse" and all the other buzzwords, that they stopped doing what they're good at. Telling stories. Sad stories. Happy stories. Funny stories. Whatever. Now, it's just a contest to see who can gather more brownie points from the various internet groups.
And this "hollowness" I'd say extents to everything else. Vigeo-Games no longer interest me. I look at my ~2k Minimate collection, and I think to myself, that I've spent at least 4k on it. And for what? 2" figs that can be easily broken or damaged (must have had their paint rub off, their arms crack, ec, etc), which are stored in a giant box. I see at all the new 1/6th stuff, and see prices of 300$+, for plastic figs. I'm tempted to buy one or two, but what's the point? What's the point of buying Marvek VI IM when IW IM might be better? Why buy GotG Thanos if A4 Thanos has the Gauntlet?
Generally, everything that used to make me happy back in the day, now seems empty. And that's sad, honestly. It's not a "Gee Wiz, I was so foolish, comics r dumb" rant. I'm just sad I can't seem to enjoy the things I used to love. I constantly check comic book websites, read the same old ****, and then think to myself "why am I still doing this?". Sometimes I feel as if I should get rid of most of my Nerd-Related stuff, trim my pull to the absolute essentials (5 or so books), and buy an HT fig once or twice a year. Keep in touch, but stop being such an avid consumer.