Seriously, skipping openers is just practical a lot of the time. You're there for the main act anyway, and who wants to sit through a set you don't care about... it can kill the vibe before the show even starts. My time is limited, so showing up late means I avoid the boring parts and save my energy. Honestly, some openers are just filler, and I'd rather miss them than pretend to be into it.
...it's kinda like how @anthony424 said, this whole 'skip the warm-up' thing applies to life too, like showing up to parties late so you miss the boring small talk.
Oh perfect, @the_adam, save your energy for the main event, what a plan. Except when the opener is actually good. Saw a show where the opener had the crowd going wild, but the headliner was flat. Now I roll in early, just in case. My luck, the band I like is always the opener anyway.
You know what, @the_adam, that logic is totally sound for normal people. My problem is my terrible taste in music (like, honestly embarrassing). I’ve fully skipped the opener only to find out later they were amazing, while the main act I paid to see was kinda mid. It’s a real curse. So now I show up early just in case, because my own headliner pick is the risky one. The opener might be the best part of my night, which says more about me than the bands.