DIY stiff here with my U.S. $.02 (actually $.01 cuz of transitory inflation
what a joke)
In my few years this site gets the full analog spectrum of OPers from various expertise level DIYers willing to slog the sweat & details and LEARN, LEARN, LEARN (rinse & repeat) all the way to lazy, cheap, arrogant, know-it-alls who want a quick fix at someone else's time and expense instead of theirs. Then you have the various mix & match combo of folks who fall in between the two extremes. e.g. you can be a cheap, arrogant diligent learner, a wealthy, polite advanced learner, a lazy, know-it-all who can't read the directions for a flathead screwdriver, but has PhD in theoretical physics or a musician with 40 platinum records that wants to learn how to fix stuff cuz he is both left and right brain dominant.
Basically this site brings all types just as we see in that thing called life.
Generally, what you get out of life usually is directly proportional to what you are willing to put into it. Yeah some folks may have gotten bitten by a bad shop in their view, but maybe they forgot to tell you they broke their JD tractor AFTER the shop FIXED it (TWICE for FREE)! Yes their are bad shops, bad customers and bad parts, but there are also good shops, good customers and good parts. Pick your industry: cars, doctors, accountants, stock broker, HVAC, attorneys, etc. All the same, your mileage may vary...
I get that this forum has basic ground rules as does life, but given it is FIX focused you got to bring the goods on specifics when asked and IMO that includes some calloused skin and especially a sense of humor. Nobody cares here that you are a member of Skull & Bones, or your the type that says "Do you know who I am?" (yeah your the OP who can't fix your mower), but we should all care if you have 30+ fixing stuff in your shop.
For me this site is great forum for getting FREE pro advice & teaching, great DIYer help too, but OP has to do their homework/research if "you" (not forum) want to fix your gizmo. I'd work in any of the above poster pro shops for free for a day or two just to pay it forward for their FREE teachings (would be fun too). Oh and pet peeve of mine, follow-up and saying thank you also costs nothing on this site -- core values.
Nothing better brings out ALL types when you include the word FREE...