My kitchen and family room both have recessed ceiling lights. Over time I had a mixture of incandescent and CFL bulbs. I never changed the 10-year old dimmer switches to ones that are compatible with multiple bulb types, so the different bulbs react differently when dimmed. I have recently put all LEDs in the family room and didn't change the dimmer. They seem to work fine. Two questions: - By not changing the dimmers, are there any safety issues? - Any concerns about reducing life of the LEDs?