While "BSG" was 'resolved' in the end, it was a BS copout and I would NEVER think to watch any rerun episodes, let alone buy the whole series for posterity....
Firefly, imo was reasonably terminated given the circumstances, it's because I think the overall premise was more timeless and didn't require final resolution.
BSG entire existence was cop out lazy shock value writing.. none of it made any sense, by the middle of season 2 or so, you couldn’t even recognize it as what the show started as, by the end it was just an abject joke.
Sure it was low brow entertainment, with decent production values, but nowhere near what it could have been.
It was basically what you get when you have soap opera writers doing a sci fi. Started out well, but the desire to simply shock at all costs all the time, turned it into a mess.
Still far worse shows have been on TV.. and they didn’t cheap out on the production values.. so I would recommend others watch it if they have never seen it, but it certainly did not live up to its potential.