Selfish Singaporeans

I wonder why Singaporeans are so selfish, just do things that they wan and not bothered about whether their actions can affect other ppl.
a very classic example will be SG drivers... so many selfish ones on the road...
1)Accelerating to prevent u frm filtering into the lane
2)Not moving to the other empty lane on the left when u are trying to filter into their lane
3)High beam and tailgate u when u are already driving at the speed limit
4)Drive in the middle of 2 lanes
5)suddenly cut into ur lane (like F1 driver) and many more...

Dunno whether they realised that their actions can cause others to get into accidents even if they themselves don't get into 1? (if they get into 1, it's well deserved)

For all these selfish people just spare a tot to people around u, a little graciousness goes a long way...