Sometimes umbrellas are super helpful and keep the rain off your stuff. The rest of the time, they're awful.
They flip out and become useless.
Source: youtube.com
One displaced spine and they're ruined forever.
Source: daughtrey.com
They're always either too small to keep both of your shoulders dry...
Source: wearejuxt.com
...or big enough to force bystanders off the sidewalk.
Source: aleksandramir.info