I did for a short time. My feelings on it are mixed. Objectively, you can absolutely stay fit and build muscle with resistance bands alone. That being said, it

I did for a short time. My feelings on it are mixed. Objectively, you can absolutely stay fit and build muscle with resistance bands alone. That being said, it has problems. To do heavy excersizes often requires very thick bands with a lot of tension applied which can result in the bands pinching your hands in a very uncomfortable way. Same with movements where you stand on the band to anchor it, it can be very uncomfortable for your feet. Also, it’s much more difficult to progress in a measured way compared to free weights. If you haven’t made enough progress to move up to a heavier band, you can vary the weight by tensioning the bands more before starting your movement, but obviously this is very imprecise. For these reasons I personally found it much more difficult to be consistent with my workouts than I do now with free weights. If space is a concern, I would still probably recommend going with a set of adjustable dumbbells and a bench over bands.