Omni was more of my dad’s jam when I was growing up, as he got a subscription as soon as it started publishing in '78, and he kept every issue. I was too young to even think about reading them at that time, and I didn’t really get into them until my teens in ~89-90. That was an amazing backlog to read through. Once I started reading them on a regular basis, he and I would fight over who got to read through an issue first (I usually won, because he took forever to read an issue and was typically still working through the previous one). He kept with it until they quit printing the magazine and went online-only.
It’s worth noting that I did see (and purchased) a copy of a new Omni revival from the newsstand at the local pharmacy a few months back. Apparently they’re planning on publishing quarterly, although I’m not really sure how well that’s going to go for them in today’s magazine climate.