I agree and that's taken from the book, Ben (as both a child and an adult) is the kindest and most unselfish of the gang which is the reason he's actually my favourite Loser. It's best shown through the Ben/Bev/Bill triangle, he's madly in love with Bev and always has been and he's perfectly aware that she has a crush on Bill, but even that doesn't bother him because he knows that Bill's a good guy and Bev being happy is much more important to him than his own feelings. He's the best. It's why Ben and Bev ending up together is so lovely to me, it's always nice to see the underdog win.
Oh, and I'm definitely throwing my weight behind Skarsgard in the whole Skarsgard v Curry debate. Both very entertaining performances, but the former feels a lot more like book Pennywise than the latter. Tim Curry is great , but he comes across more as a psychotic human dressed in a clown suit, whereas Skarsgard's Pennywise never seems human at all, he's very much more the bizarre, Lovecraftian entity that is trying to pass as a human but not really achieving it that It/Pennywise is in the book.