...are like exits on a highway
Highways are wonderful - if you wanna get fast
from A to B by car - if there are no traffic jams.
Yes, in general highways are very convenient.
Just going straight in one direction at high speed.
BUT....if you are driving high speed on a highway and
you realize that you are heading in the wrong direction...
then suddenly a highway isn't so great anymore.
You can't make a U-turn there, you have to wait for the next
exit and if you miss it you have to wait for the next one
which may be miles away.
The lives of many people these days are like highways.
And mostly they even choose the same highway again
And then they wonder why they always end up being
in the same old place.