It's OK and fun. I like games with unlockables and collectibles too. They increase replay value of video games.
At the same time it is – the replay function – what makes me think deeply. Recently I decided not to watch TV ever. And there was something else too: for a decade I have been watching or listening to something while eating. I mean I never ate anything in silence. So that was a strange thing, and I decided to take meals in silence.
The games are like narcotics, that's why I gotta ask myself about them how deeply they have involved me into their reality? I mean it. Now it isn't so serious, but who knows how it'll be tomorrow?
And again, those games which are replayable (I forgot the correct slang word for this. I used that term and forgot... Something like re-playiness?) are the ones that require our concentration the most. Well, I don't know, while this fact is holding me at those warm games from past, like Supermario Brothers or Metal Gear (1987), and Metal Gear 2: Solid Snake (1990), Syphon Filter 1&2&3, Resident Evil 1.5 (1997+developed last years), Teenage mutant hero turtles (NES, Sega, SNES, arcade machines), Splatterhouse 1&2&3, Contra and Super Contra, and so on.