SG gives too much points (?)

It's because of the recent influx in Clickteam Fusion giveaways, I believe. Though generally if you enter only for games you really want to play, you'll never run out tbh.

we are all addicted to collect games and hoard them :)

300P 99% of time so i dont know :D

Yeah nerf the points ... couldnt use them all even during Christmas !

I think so too, but a lot of people think the amount of points you get it's fair. Can't argue with the majority.
Even so, I've learnt to spend them wisely (as in almost never spend them :P ), entering only what you really want is the way to go. Don't try to spend all your point either, it's not happening.

It does. The system was designed when the site less than half of the current user base, and currently there are 4-6 times as many giveaways created as then, meaning the twice as many users get 4-6 times as many points, so there are 8-12 times as many points to spend overall. In economy, this is almost enough to call it hyperinflation.
This is why even the shittiest junk can get hundreds of entries. The hoarding levels on this site are beyond ridiculous, I cannot even name you the last time any of my public/open group winners actually even played the games they won. (Not from me, in general.)
Cutting back point generation could help a ton. Even 75% point reduction wouldn't be bad. Maybe even more.

Points generation is not static, it is a % of the value of giveaways created that we get credited as points. Generally it's somewhat high indeed but you also happened upon one of the most active times of the year both because of the winter sale and the Developer bundle HB has now. That means there's a lot of people making giveaways(and high cost ones) so the point generation has skyrocketed.
I'm also quite oftenly just sitting on 300P nowadays, maybe for days, however when a wishlisted item goes in a bundle or there's some big event on the forum( insert traumatic memories of that 100 Floor Maze event) you will run out of points before you know it :3

dunno, i enter what i want and done. nobody forces anyone to use all his points all the time.

The more giveaways that are created, the faster you get points.
They could be cut back, though, and I definitely wouldn't mind
Except when there's a Humble Monthly I skipped with a game I really want. :X