People getting defensive at car shows!

The people at normal car shows just ruin it for me.
(not cruise nights or charity shows, for some reason everyone is happier and less cynical at those.)
I went to a cruise night at a local burger spot that happens once a month. Nothing too big, around 25 cars. I set up with my little slant 6 survivor and just start enjoying the show. Since I am the youngest guy there, wouldn't you know it; EVERYONE IS AN EXPERT all of a sudden. Most of the guys there were nice and liked my plans and what I had done, but at least 25% of them were just ripping me a new one over every little detail.
However, the next morning I went to another show. (formal judged type one) and the same thing happened. but this time EVERYONE IS A EXPERT. (over 90%) EVERYONE I talked to except three told me I was a.) doing something wrong b.) going to my dad and asking him questions about the car, (which is a honest mistake,) then when I started to answer their questions, they got all pissed and tried to talk over me!

All but three.
Well young Sir I would not worry about it at all. And make no mistake those folks rip everybody regardless of age. I often take my Cuda to shows just letting folks see another side of the hobby. I can assure you when you roll in with a beautiful Cuda unstrap from the roll bar, set all toggle switches to off and toss steering wheel on dash and climb out, them boys are on you like ants on a sugar cube. How could you do this to a Cuda, is the whole front fiberglass, is there nothing original on your car? I just shrug and say” that’s why your key don’t fit” But then some young kid swings by and I tell him it is fine if he wants to sit in the car for a pix, he looks at his Father for assurance and boom we are doing photo ops with the next generation of gear heads. The Father thanks me over and over and the kid is beaming with an ear to ear grin! Makes it all worth it.