We have just been through this same agonising. In the end we replaced dining room and lounge carpet with carpet. Kitchen and hall are posh laminate and we did think long and hard about continuing this through out. Was put off by thought of having to be careful with computer chair with wheels which has decimated laminate in one of the upstairs bedrooms. Also dining chairs and similar scratching floors. Noise absorption, small children visiting and possible bleakness also considerd.
Still don't know if right decision as cosiness not an issue in June, but I hope it will prove so in the winter.