There's still a time and a place for Preacher today, if it's done properly. But it wasn't. Some of the cast were excellent, but the whole thing was let down by shit writing. I expected some departures from the comic, as that is to be expected with any adaptation. But the writers were so keen to do their own thing that it turned into something else. That whole sub-plot with Arseface and Hitler was a boring waste of time. The whole of season one was about Jesse Custer being a preacher before he embarks in his search for God, which isn't the point of Preacher at all. Starr and the Saint don't do anything until season two. And the two seasons I bothered to watch were based on the two least interesting story arcs in the comic -- Odin Quincannon and New Orleans. (Although I did enjoy the bit where Odin urinates in the mayor's briefcase.)
There were some good bits. The whole episode in Las Vegas was absolutely brilliant. The actors playing Cass and Starr were perfect, and Ruth Negga was so good that I didn't mind that she looked different to Tulip in the comic. But overall, I thought it was a wasted opportunity, and it has put me off watching The Boys in case it's the same.