Why does everyone build zip lines that go straight?

Genuine question - why build zip lines that go in a straight line? Every time I try to use a zip line from another player, it gets blocked by some obstacle like a rock or a tree, and that could have easily been prevented if the zip line was curved upwards.

This is an appeal to the community - even if you are building a zip line that connects in a straight line to a different zip line, please always build yours with a curve upwards or to the left or right, so for the off chance that your zip line lands in someone else's world, it has a better chance of connecting to other zip lines. Thanks!