"There is nothing wrong with that if you feel uncomfortable to race but we are part of a team and they rely on us to do our job which is drive the car. Had Romain not walked away obviously things would have been very different on Sunday.
"I think back in the '60s and '70s it was way more dangerous and the drivers of that era were still going out on track because they knew it was their job and that’s what they loved to do, even though they knew the risk was very high of losing their friends around them."
Grosjean, who was airlifted to hospital where he was treated for burns to his hands, was discharged on Wednesday. He will take no part in this weekend's event, with reserve driver Pietro Fittipaldi serving as his replacement.
Verstappen added: "The safety in place now is incredible and I respect everyone's own decisions but that is how I feel. Nobody ever wants to see an accident like that but all that really matters is that Romain is okay."
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