>

I suppose it depends what kind of "event" it is. A big open outdoor event where there is space? Absolutely, go nuts.
But a very cramped, indoor music event where you're basically touching elbows with other people... Nah, that's kinda shitty.
I hope someone holds a screen up that blocks your view, at every event you go to. >

I hate to break it to you but a phone screen won’t block your view >

Numerous phones, and the hands holding them, can quite easily block the view.  
The last concert I went to, I could see the artists on stage for less than ten percent of the duration of the concert. It's incredibly inconsiderate. >

I think it's a popular opinion to be honest >

not unpopular. having your phone up taking pictures or recording/streaming video THE ENTIRE EVENT or a significant portion of it is not fine. >

Watch it now because even though you are recording it, you'll never watch it again. >

You can do both??? >

Exactly!  We have the technology to rewatch our favorite memories so why not put it to use? >

Probably because there is a high chance that it is being recorded with a better angle, better quality camera and not interfering people around you. >

That’s true, but I guess it feels a lot more personal when recorded with your own device.  I don’t do this, I like to enjoy the moment, but I do understand why others take videos and appreciate that my family does it so I can go back and rewatch precious moments.