I actually just finished my first proper stint as a GM a few weeks ago. There was good and bad aspects to it. We are basically a rollplaying group doing Pathfinder 2e, and hopefully some Starfinder 2e in the future. Honestly I did not love GM prep in Foundry. I think if I were going to do it again I would have to be making my own stuff and maybe interjecting a lot more, you know, actual roleplaying. (This is not a knock on our groups preferred style of play. But I do not think it is necessarily conducive to me wanting to run a game.)