I did a good brand laminate once and never really liked it. Your salesman is a BSer, for if the floor cracks, the house is falling down.
I would expect 5-7 years to be about the lifespan of laminate floor. I have laminate, and consider it a waste of money.
It would devalue it in my opinion. I've had laminate in 3 different situations and it was unsatisfactory all 3 times. If I were looking at a home to buy and it had laminate, I'd want to consider the cost of removing it. The argument about the foundation constantly moving sounds like complete hogwash. If the house is moving that much, the flooring is the least of your worries. Laminate is locked together. If the foundation moves enough to crack wood flooring, it will move enough to unlock the laminate.
We have purchased a house in Plano, Tx that needs tiles and carpets to be changed. While looking for wooden floor options, we came across laminated floors that look beautiful and as good as wooden and costs less. It hard to tell the difference even by touching it.
As per the salesperson, an old man with plenty of experience, we should opt for laminated floor with good vapor barrier for couple of reasons. 1. Dallas area soil is always moving and so is foundation, therefore a wooden floor after few years may start to develop cracks. 2. Laminated is easy to take care off.
Here's my concern: Would the laminated foor hold its value within next 5-7 years if we want to sell the home? I heard someone mentioning that laminated floor actually devalues home value. Is this true?