Turns out I didn't really hate exercising. I just prefer doing it on my own solitude.
I don't know what it is that makes me feel uncomfortable getting out there training in public. It doesn't matter if it's at the gym or on the road. I prefer privacy and rather work out when nobody is watching.
That's why I prefer running in the forest for example. There rarely is that many people there and you only see them shortly passing by.
That same privacy isn't really possible going to the gym. Sure you could sometimes catch it empty, but even then there is always the anxiety of somebody walking in.
Now that I have my own personal gym in our garage I'm actually looking forward to my training sessions. It's nice being able to focus on the moves themselves instead of constantly being bothered by other people around you.