I really hope the rate of rough reentries will be more like 1 in 100. Out of my 19 trips on GC all 19 reentries were pleasant. No trips on US Passport yet.
Never had a problem as well.
Even when I was entering many times on the visa waiver program, then J1, then H1B and now green card. The toughest question I was asked was what the purpose of my visit to the US was (obviously when I had no visa).
Actually, I never in my life got stopped at any Customs in the world until 4 weeks ago when I landed in Amsterdam from Cape Town and the customs agent asked if he could search my bag.
LOL, I must have a good-guy face...