These days a lot of folks don't have a clue. I do some ATV work on the side. Seen 10+ year old machines that have never had an oil changes or air filters cleaned/replaced. 1 Honda I had to scrape the sludge out of the oil filter housing, just solid. Had a Yamaha 700 that could not run with a 400. Just changed the 10 year old oil and cleaned the air filter, took multiple washing to get the mud out. All of a sudden it would run like new, been 4 years and nothing has been done to keep it up. I gave up and let them complain it's a POS. Same folks don't get why my 20-30 year old machines run circles around theirs.
My stuff is dirty and grease caked but everything gets scheduled maintenance and repaired as needed. I don't baby anything and many would call things I do abuse, but I own them to work not look pretty.