Personally, I’d say so. Generations in particular has a pretty gentle learning curve to it compared to earlier titles in the series so it’s a fair bit easier to get into the series now than it was.
(I’m looknig at you MH1/MHF1 where you basically said “Remember all those easy quests you’ve done up until this point? Well, here’s the Kut Ku. I know that you’re woefully underprepared to fight this thing, but have fun!” trollface.jpg)
Anywho! Yes, I’d say it’s well worth it, as we’re unlikely to get Double Cross until at least a year after Japan does, as has been said, it’s much better with a group, but the single-player content does help you get into the game overall in terms of not only your equipment, but learning monster behaviors, attack wind-ups, spacing, etc, etc.