Be careful which LED's you buy. It is a wild west out there in terms of quality. The better products have an energy star rating (for lamps) or DLC listing (for fixtures). The better quality LED's which meet these ratings will not color shift over time and will keep their lumen output more consistently over time. LED's do not traditionally burn out but get dimmer very gradually over time. The better ones have an L70 (70% of rated life) over 100,000 hours of operation.
Fluorescent is a really good bang for the buck right now. There are longer life T8 tubes out there (84,000 hours B50 - which means half the lamps are burned out at 84,000 hours - still many years). I think as the other poster mentioned color temperature seems to be what people are having issues adjusting to. An incandescent lamp has a color temp of 2700K. Your normal office lighting usually has 4100K (cool white) or in some retail environments is 3500K (a little warmer and brings out yellows and reds) . As the number for kelvin temperature gets higher the lamps get cooler (more white and blue). It all depends on the individual as to what looks best to them.
Let me know if any other questions. I work for a lighting manufacturer.