Given normal/non-abusive riding how long would a steel frame like this last? http://www.trekbikes.com/us/en/bikes...icsteeldeluxe/

I sold my old cruiser and miss it . Now I would like to get a new one but wonder if the frame would be as strong as my old cruiser. They look the same but, maybe they are not built like they used to be? Trek say the limit is 275 lbs. Which given the fact that it is made of steel seems like a very light weight limit. That is unless it is a component issue and not a frame issue.