A few years ago I replaced some of the high usage fixtures with CFLs, now I'm starting to replace some of those with LEDs. Some will stay incandescent. I see no reason to replace very low usage bulbs. If they burn out I may replace them with LEDs. Likewise when some of the CFLs go I will probably replace them with LEDs.
LEDs look better than CFLs and seem to have more shapes so I can replace the round bulbs in my bathroom vanity, for example, which I didn't find an option for with CFLs. Pay attention with LEDs whether it is a focused light vs a diffused light, and decide what you need in each area. I just replaced some dimmable inside floods with LEDs and found that my 14 yr old dimmer does work with them, though it only goes down to about 25%, and one of them will not light unless I raise the power and then dim it back. No buzzing or flickering with mine as others have reported. LEDs work better outside that CFLs too.
The disposal of CFLs is a pain. I guess that's why some might just replace them all and once and be done with them, though I'm not going to bother. There are some places where I don't mind a CFL at all. The slow start can be an advantage with a light you turn on first thing in the morning, to get your eyes used to light.
I've switched over all my Christmas lighting to LED. That seems like a no brainer as the light seems better, more reliable, and cheaper to use for hours at a time even if it is just a month or less. Plus there is a lot more it seems they can do with changing colors and synchronization. I haven't really looked into the technology but it wouldn't surprise me if home lighting becomes even more of a design feature with LED in ways most of us aren't thinking of right now.