Yeah, using an umbrella is almost universally more important as an adult. Children can forget an umbrella, choose to stomp in puddles, and show up for daycare/school/playdate soaking wet, and its generally not a problem. If the child is young enough, there is a good chance they are being put in clean dry clothes. Older children may have to suffer through sitting in their wet clothes. If an adult forgets their umbrella and its pouring rain, they need to try and park close and move quickly. If an adult shows up for work soaking wet, it makes then look unprofessional and ilprepared. Obviously there are plenty of cases were an umbrella is unnecessary but a child will still want to use one, such as when it's barely raining, or you only have to walk 3 yards into the house you will stand outside trying to put your umbrella down longer than you would have taken just walking in without it. And I get that adults don't use umbrellas all the time and it's fine....
... but how heavy the rain is and how far you need to walk are huge factors. So is where you are going. Plenty of people would use an umbrella for a ten minute walk to work in moderate rain, but would forgo the umbrella in a torrential downpour in order to walk back to their dorm room after class, for example.
But either way, umbrellas are useful tools that can help keep one both dry and professional looking. Which is useful for adults in a way that children dont yet have to care about.
But either way, umbrellas are useful tools that can help keep one both dry and professional looking. Which is useful for adults in a way that children dont yet have to care about.