If you regularly get sunburn, you should use sunscreen, because sunburn is unpleasant. Death isn't the only thing that matters. If you haven't noticed that you get sunburn or haven't thought about the possibility of using sunscreen or making simple interventions, like buying sunscreen, or putting it near sports gear as a reminder, there are great opportunities for improvement.
Whether to use sunscreen in situations where you won't get sunburn is controversial. But these situations are intermediate and it's probably less important to get them right than the extremes.
Added: maybe this sounds like trivial advice, but it's important to figure out what the typical advice actually means in terms of who it's aimed at (confer).