The Expanse is my favorite series currently on TV—sci-fi or otherwise. I always tell folks they need to get about 4-5 shows in. I remember trying to watch it when it first came out and only got about one and a half episodes in (Thomas Jane in the fedora got on my nerves). A friend convinced me to give it another shot when S5 was 2 episodes in. I binged S1-S4 in about a week or so then watched each remaining episode the day it dropped. It's a bit of a slow burn at first due to the necessity for world building and character introduction, and there are a couple of lags in the storytelling, but overall it's a great series with an overarching narrative. The 6th (and final) season is already off to a solid start. I much prefer series that have a definitive end point as opposed to those that overstay their welcome.