"Integrated Amp" Do I dare go there??????

Hello Audiogoner's,
Without going into huge details I'll get right to the point!!!!, can a serious Stereophile, really survive on integrated amp alone?? after having separates for over 40 years, are there any really awesome integrated amps out there which could out perform my present system?. I am Running Krell, gear but I am getting that change gear itch! Bad Idea! can't be done?, let me know sugestions appreciated. ******Thank You Again.