Do i use them? yes. why? not just because it's mandated by the law but also for the safety of myself and other drivers as well.. Do i use hi beams? a big no no.. why? because things are just gonna get worse for you and others around you. Think of it this way if you're driving in a heavy downpour in day or night isn't it irritating to see oncoming traffic with their hi beams on and much worse if they're behind you? hi beams just reflects to the rain/water and barely helps your visibility in extreme weather conditions.

i'd say drive slow/responsibly and use a lot of common sense