Yeah, as the tile says.

Personally I like them, no matter if they are used in conversations, intros, endings or as "rewards". It's just nice to have a small break after you finished an area or level. Especially if the cutscene adds to the story/context of the game.

i like them, they are my reward for a stretch of sometimes difficult or boring game mechanics

Same as my opinion on any game feature. If feature X is well implemented, it can improve the game. If feature X is badly implemented, it can worsen a game.

I didn't really have much of an opinion on them as they became more and more prominent among games I played over the years.

But, recently (within the last 5 years, at least) they've become a bit too abundant for my tastes.

I've never been among those who find them to break the flow of a game (even when they're very clearly different from the game itself) and I'd agree that they can help push a story when it happens to be in need of it but I have to draw a line when they risk sharing (or stealing) the spotlight with what's afforded to me, as a player, to do in the game.

This. For the love of all that is holy this.

That freaking post Liara elevator battle in ME1 comes to mind.

Yeah, I agree on this actually. The first boss in Castle of Illussion comes to mind for me.

I'm alright with having them as rewards after a stressful game sequence or the like, but I don't like when they simply take control away from me so as to put me in a shitty situation, such as walking into an obvious ambush. Also I'm not that fond of quicktime events in my cutscenes, just let me kick back for a while and tell me when you're about to give the control back to me.

I have no problem with them being unskippable the first time round. But you should be able to skip on a re-load or replay.

You know what's really annoying about cutscenes in most games? They can't be paused. If my wife or son needs me, and a 5-minute cutscene just started, my choices are usually to tell them to wait 5 minutes, or to miss potentially important plot points, because I have to skip the cutscene in order to pause the game. For some weird reason, most games use the escape key both for menu/pause and for skipping cutscenes, which means that cutscenes just flat-out can't be paused. It's annoying as hell.

Personally, I play games (even RPGs) for the gameplay, and would prefer it if cutscenes either:
1. were not used at all, or
2. were completely optional and didn't impact the gameplay at all.

Optional, skippable cut-scenes used as rewards are best. Like in old games where if you got an FMV cut-scene it was because shit was about to go down or shit just went down and you were getting your reward with graphics that "will never look that good in actual gameplay" lol.

I like having cutscenes in games only to the point where the cutscenes are skippable and don't pop up/appear too often. Especially when playing a hard game, these things need to be taken into consideration in my opinion.

I am GR00T!

Cut them and focus on the gameplay, and let the real movie makers in Hollywood make movies.