I don't see video gaming as being related to maturity any more than reading fiction or watching TV.
I think pretty much everyone who plays games gets sick of them at some point, for awhile (months even), doesn't surprise me - change is as good as a rest. The labels flying around the whole thing really don't help, I mean whether someone just wants to play Streets of Rage 2 every weekend or have a game of scrabble on the spectrum occasionally (my barber does), they're still using games for what they're designed for.
There are some facets of the game industry which I do believe you can grow out of and become extremely tired of:
1. The cost of it all.
2. The summer slump.
3. Re-repeats.
4. 'Trends'.
5. Obsession with graphics and 'storytelling'.
6. Mass time consumption/Tired!
1. Cost - not only do we seem to pay through the nose for our software compared to the US, but there's less variety anyway It's like buying tapwater by the bottle. Videogame magazines seem to be pushing for £5 cover prices (or close enough) - why? I think half of it is simple 'getting away with it'. You can't wait to buy a game, oh no, there's only x thousand made and it'll be sold out before it ever gets to bargain-bin prices - BUY NOW BUY NOW. Nah, who really wants to spend this much just to play games? You hear of people taking jobs just to fund their gaming habits - slave to the industry. After realising this, I wouldn't blame anyone for flipping the bird at the game industry.
2. Slump - we're still operating under that old chestnut "nobody plays games during summer". Uh, excuse me, I don't want to go outside and play football with my little friends all afternoon, kinda grew out of that a decade back. MMOGs don't seem to choke and keel over during the summer months, so why on earth do we get nothing but 'Tom and Jerry' games etc. during summer? The industry is adamant that it will continue this way, then release everything at the end of the year in an attempt to bleed you dry.
3. Re-repeats - for whatever their so-called reasons, the software industry wants to vomit up more of the same - admittedly most titles are profit-losers but that's entirely self inflicted by the whole system. Even titles that emerge as original quickly get the knackers flogged off them - stand up Dynasty Warriors.. now sit down again, on your hands, keep away from my wallet.
4. Trends - as already mentioned, we've been knee-deep in 'gangsta' crap since GTA3, it REALLY gets boring, give me some werewolves and pirates and transvestite insurance salesman or even Captain Planet. After hearing "gonna pop a cap in yo a$$ m0F0" so many times you begin to wonder what the obsession is with your buttocks. Again, it's self inflicted, softcos. seem to have trouble with the old 'free thought'.
5. Graphics/Story - Since the advent of 3D and large-capacity mediums for software, we've lost 2D gaming in a flash, BOOM. The new 3D genres of games haven't been 'added' to the mix, they've completely replaced the 2D games which played differently. It's like horror movies suddenly all becoming westerns. Controlling 2D mario was about precision, controlling 3D mario is about kinda hitting your target whilst stopping the guy sliding down a cliff - it's like controlling an entity composed of 20 furbies moving at the speed of a cannonball.
By the same token, vast amounts of games now have overly long 'plots' (term used loosely), 'character development' (mould develops too, so what?) and overly complex actions/controls. You can't just pick up and play most games because some OIK dictates that we have to trudge through tutorials first as well as listen to a bad voice over for a few minutes. The RPG crafters, oh goodness, they think they're film-makers and authors now! Subtle hint: stick to videogames, you're not cut out for it. Playing a modern RPG is like watching a bad book with squeaky voices and a graphics budget big enough to sink ships. We lose, again.
6. Time - modern life is not exactly brimming with free time, nor is it improving in that respect. One issue I've had with VGs is that they require effort and energy - sometimes you just don't have any energy left.
Hrm, another long rant XD
I'd say just step away from them for awhile without worry. If you get the urge to play some games again, great, but make the dozy softcos. earn your cash the same as every other business has to. Apart from the Wii, the new set of consoles seem to want to do everything up to and including doubling up as a kitchen sink, so I don't blame you for not wanting to shell out on them.