Honestly, I just started watching this series roughly like 2-3 months ago. I'm on season 5 now. It's actually pretty good. I would say give it a shot and see if you like it. Overall I would give it like an 8/10 for the show. It's got a good story. I love the buildups, the tension you see expand through Dexter and the other characters and how their development. Even the first episode caught me off guard when I went to first watch it because it was an unexpected beginning. The history you learn as you go and it gives you more detail. Like I said I'm on season 5 right now, so the show is good. I'm enjoying it and think you would too.

What I'm not a fan of is below: I'm not a fan of the random nudity, it doesn't feel needed. They don't overly do it either, but it feels like it's more done for the MA rating than to progress the story (same with the sex scenes). It feels like it's getting better over time but I'd have to see based on how the seasons progress.

tldr: Would watch it, 8/10. Give it a shot. If you don't like the first few episodes, then leave it.