As rocket mains, what do you find the most fun?

I have been wanting to make my own rework idea (I've seen a lot in here recently) for rocket, and as I was making it I realized that I don't know why rocket players like rocket. I'm not a rocket main so my own biases would come through and possibly ruin the fun that you all find in him. That's not the goal of any rework, so I was hoping ya'll can help, and maybe you'll give me a reason to try him now, too.