Agree with Madison here (on both the roto/H2H and the reasons between FFB and FBB).
Baseball is 162 games in 26 weeks where every single day (except 3) could result in chances to have the standings change, for players to get hurt/traded/get sent down/called up. Depending on the type of league, you may have to be concerned with top prospects as well as the starters and back-ups currently on each teams roster, not to mention simply needing to be aware of more players in total since you have more roster spots to fill.
Football is 16 games in 17 weeks, almost all of which are Sunday. There are generally only two days to follow actual results and one day for waiver picks. You have fewer players to play, and therefore need to reserach fewer players. Players rarely get traded and while more may get hurt, there is no minor league system in place to call up players (since reserves are already on the roster).
As a result, baseball is a grind simply based on the way the schedule is structured, especially as compared to FFB. And it can be even more tolling if you get eliminated in your league. But, as someone else said, this "grind" appals to me based on the fact that I have the ability to know more and be aware of more if I spend the time and, basically, I can affect my chances based on how much time I spend in research. In FFB, I will always start my top 2 RB regardless of where they are playing and against whom. In FBB, I have many more decisions in terms of SP in one week than I normally do in a season of FFB with my QB.
But I can see if FBB isn't for you based on this grind and I would suggest FFB as an alternative.