In reply to Tigger:
I have put on a new zipper on my softshell, repaired the ripped-off corners of my camp chairs, sewn and seam-sealed holes in my hardshell pants, melted loose threads, lubed zippers, fixed the plastic bits on my Moka pot, etc, etc.
A little sewing, superglue, seam sealer, zip ties, epoxy, lube, etc are great stuff to make your kit last longer. My favorite summer/indoor climbing pants are 90's milliary ones I got for free, shorten to 3/4 length, and repaired a few times.
A sewing machine seems to take a lot of space in my tiny apartment so I haven't bought one. Occasionally looking at a used one, but never buy one because of space.