Like others have said there is nothing wrong with pop-ups.
We had three pop-ups over a 26 year period. Our two kids grew up camping in pop-ups along with three dogs over the years. We pulled the pop-ups with a 1967 Ford station wagon, 1980 Pontiac Grand Le Mans, 1985 Chev Celebrity wagon and a 1991 Mercury Villager Mini-Van. I simply couldn't afford a truck or a travel trailer in those days.
Only in the last 7 years were we able to afford a truck and TT. We had some of the best times camping in our Rockwood pop-up that lasted us for 21 years.