Their traps are beautiful to behold. A marvel of engineering in every way.
The strongest spider silk is from the Golden Silk spider. It is the strongest fiber known to man. It is five times the strength of steel, stronger and more elastic than Kevlar (bullet proof vests).
The webs of the orb weavers were the seeds that grew suspension bridges in the minds of many architects. Think Golden Gate bridge. Strong enough to be a bridge, but flexible enough to hold up to the earthquakes that mother nature dishes out.
Spiders, while scary to most folks, eat their weight in insects every day. Insects that cause human disease and death.
Just as a bit of trivia. If you look at the web above, the 'spokes' of the web (think wagon wheel) are not sticky. Those are the walkways for the spider. The circular part of the web is what is sticky and catches all the insects.
On foggy mornings, you can often see the webs that you would never see otherwise. While I love spiders and the place they hold in the ecosystem, I don't like walking into a web unseen anymore than the next gal. I then do the 'spider dance'. It's a bit of jig, coupled with some mad wiping motions of my hair and clothing.
For now, I just choose to admire the beauty of the web. Nowhere else in nature can you find such a show of ingenuity and engineering. It really is a piece of art, if nothing else.