A little reality/humor here.  What is your most expensive piece of machinery you own to operate, be it per hour, acre, mile, etc., and if you own a semi truck it is your only possible answer!

They have be come a necessary evil for many of us.  There are going to be people here who are content driving 20+ year old trucks that are noisy, loud, dirty, and crude compared to today's trucks (which is fine....I have one of each) but regardless of age they are driving money pits!