My girlfriend (vegan of 12ish years) actually has trouble eating any of the more realistic fake meats. She says she has just lost the taste for it and that it grosses her out now.
This is roughly what it's like for me, too, as a vegetarian of over 20 years. I wouldn't say it grosses me out, personally. It's more that that, after many, many years of eating food with much brighter flavors, it would seem that that whole corner of the flavor spectrum just isn't palatable to me anymore.
We've noticed an interesting phenomenon among kids in vegetarian families: Preschoolers who will literally fight each other over things that their peers typically avoid like the plague, like broccoli or tofu, but, if you give them a meal with some sort of realistic fake meat in it, they will diligently pick around it.
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