I would debate with you about sewing being a great skill but that's not the intention of this thread (pun intended). I was taught sewing in home economics class back in the 6th grade and in the decades that have passed I have only used it to sew on an occasional button or my son's patches. I'm not saying its worthless but I would rate it lower than many of my other skills I use daily or weekly. The wife doesn't sew at all.
I can also say that at least all of my son's patches are on his uniform and easily updated unlike many of the others in the troop. Funny, CC (middle age mother of two if it makes any difference) was just at my house last night and complained about the sewing. Scouts have gone into BOR with wrong ranks and offices because they didn't want to be bothered with the patches. I also don't like the patch area of the shirt after patches have been sewn and removed several times for officer or rank. IMO it weakens those areas greatly, not that it matters a lot.
Wow ... this actually sounds like a validation for sewing if ever there was one!
See, if people really know how to sew, there is no visible mark on the shirt after patches are removed because the stitching is neat and the thread is a proper match. When you remove it, you simply undo the threadwork and there's little evidence that the former patch was there (unlike a giant blank patch of velcro waiting for its new patch - and what happens when that bit of velcro is itself removed, I might ask?). Also, sewing on a new patch takes maybe 10 - 15 minutes. Are our lives so impossibly hectic that we don't have a few minutes to sit and sew on a small patch? If so, we need to re-prioritize some things. Now, if I see a Scout walk into a Board of Review with the wrong patches, I don't blame sewing for being too hard. I don't blame his mother for not getting it done, heaven forbid. It's the boy's fault! A small infraction, mind you, but let's not blame the skill (or lack thereof) for the problem.
And as the son of a tailor, I apologize, but sewing is an invaluable skill that really has no replacement. My clothing lasts far longer that that of my friends because when something tears, I can fix it up, and if it gets worn, I can mend it. If I bulk up a bit at the gym I can alter pants or jackets accordingly, and when I slim down I can tailor them back to size. I can hem my own pants and modify my shirts - in fact my Scout uniform is even tailored to fit just right!. And my father the seamster can do a hundred times more. He upholsters the furniture, makes curtains, bedding, tablecloths, pillows, shirts, dresses, costumes - he made my sisters dolls when they were young and their prom and wedding dresses when they were older, he made us incredible Halloween costumes growing up - over the years my family has saved thousands of dollars that other families have to spend to buy all those things. So, while I apologize for the rant, I stick to the truth that for those who understand its manifold applications, sewing is a priceless skill.