I still don't like Steam. I resent that I have to have this "Store" middle man on my computer just to have access to games. I want to pay a company for their product on their web site, download the installer, and install it on my operating system directly. I don't want this other layer that I'm dependent on, who could switch off my access to the things I "bought" whenever they want.
Steam has multiplayer integration so you don't have to connect by IP to play indie games, that is massive. So many people either don't have access to their router or don't have the skills to configure it to play multiplayer without steam without having a server middleman which most indie games wont have.
Then steam reviews are the most accurate reviews there are for how likely you are to be happy with the purchase. I am much more hesitant to spend money on a game where I can't see the steam reviews for, so there is basically no way I'll buy a game on epic store that doesn't exist on steam since I am basically buying it blind.
Looking at what many of your games do I think it is better option. I have zero doubt that there wouldn't be countless downloaders and accounts and poorly written startup menus for each game and each publisher both big and small.
Simply getting installer would not be option for most games.