Sorry for the personal question, but do happen you actually... like RPGs? At all? Or are you aiming for some kind of RPG codex caricature, "we've analysed games so much we hate them but still can't stop talking about them"?
Well, I really enjoy computer simulations of Dungeons and Dragons. And I like tactical/strategy games with RPG elements far, far more than I like tactical/strategy games without RPG elements.
But I do feel that improperly used RPG elements can detract from a game. Skill trees without respecs would be a prime example. In MMORPGs, where it actually matters, everyone just copies the best builds off the internet and/or respecs a lot (I respec'd over 100 times in WOW for PVP purposes and I quit that game early on). In single player you either get spoilers off the internet (the majority of voters did this), play on an easy difficulty where it doesn't matter or play on a hard difficulty and risk getting stuck due to poorly balanced and documented mechanics. I'd prefer it if this kind of mechanic went away, but I can see why they use it; the gameplay of something like Torchlight 2 is extremely shallow once you take away the quest for the perfect build. Many builds use less than 4 abilities the whole game.