Why do two wheelers insist on leaving their lights on full beam at all times? It is thoroughly fucking annoying to not only other road users but also to pedestrians.
It does not make you look cool and it will not make you safer on the road as on-coming motorists will be dazzled/blinded and run straight into you.
Oddly enough, it seems this fault is more with Farangs on hire bikes than locals.
Let's do what the Chinese traffic cops do by stopping offenders and then making them stare into their own lights for a while to teach them a lesson.