Always turn your head to check your blind spots. It's not that difficult and can spare you and fellow road users the agony of getting into avoidable accidents.

I wasn't taught to check blind spots in the 90's. What they emphasized was to give signal using arm when riding and driving (nevermind that air conditioner was a common feature in cars even during that time).

I try to check the coast is clear first before signalling. No point confusing other road users by signalling if there's a car right beside or near me or coming in fast - unless my intention is to allow them time to consider backing off and let me pass during heavy traffic.

Fully agree with motorcyclist part. I guess those who do this don't drive, hence they're not aware of the danger.

Lol quite true, but it's just to glance for any obstacle, not to see whether the other driver is good looking or not. I guess it's a risk we need to take.