To be honest, I never thought we were going to see Satoshi achieve his dream in the series proper -- or, at least, as far back as when I picked the anime back up at the beginning of D/P, I didn't think we would. Pokemon Master is one of those nebulous concepts that's never fully explained in the series. We're highly aware of what a Champion is, for instance, but the actual meaning of being a Pokemon Master is never revealed. And by having the word "master" in there, it implies a level of skill that takes many years to fully develop. Even if Satoshi were to win a league, beat the elite four, and beat the champion, I don't think I'd consider him a master from just that. In a very real way, I think his continued travels contribute more to that goal than any victory at a gym or in a league could, anyway. Granted, I would love to see him do all that, but it's not a prerequisite in my mind.
I don't really watch the anime out of a desire to see Satoshi become the best trainer ever or win lots of battles or even accomplish his goal, I watch it because it's fun and entertaining and enjoyably light-hearted, usually, and that's a fair change from a lot of other content out there. I think it was exactly that during BW and it'll continue to be lots of fun during XY.
BW made it more fun than DP did for me, but Da! has been a real chore to sit through to say the least. For me, it was fun, but it's lost that enjoyable feeling for me (the newer seasons), so that's where I've got that basis for my conclusion. I respect your opinion, though.
It never felt light-hearted in DP in my eyes. The mature feeling was somewhat nice, but they still said the characters didn't age back then, so that made no sense to me and made it awkward to see kids acting so serious. lol.
Yeah, I guess I can understand some of those feelings. I mean, whether you find something fun and enjoyable is a totally subjective experience, lol, so I don't fault you for not enjoying the current season. My only real caveat is to point out that we have no idea what kind of tone XY will have. Like you're totally right that there are significantly more serious, dramatic moments during DP - which I enjoyed - and then with in like ten episodes of BW, you have TASTING TIME and Dent's fabulousness all over the place. But it's probably a better idea to stop watching when BW is over, keep your ear to the ground, and consider giving XY a try if you like what you hear about it. Or not. Totally your prerogative.