Now the kids are a bit older, and once I've retired in a few years, I'm going to do the big trips - Japan, South Korea, Iceland, New Zealand etc and they'll be invited along if they want to come. Those I'll do as package tours I think.
Then for me, once the cats have popped their clogs, I'm going to get a little van so I can car camp and just go on little pootles - either sleeping in the van, or in a hotel as I feel, following wherever I feel like going for a little month or so long Odysseys..
Then, depending on where the kids are living, I might go and stay places for 6 months or so - like somewhere warm in the winter etc. just for the experience and to learn specific things (eg. I'd like to make one of those wooden Finnish cups, and learn to spin Flax, or go and see if I can dig up an Opal)
Basically, I'm in the happy situation of having enough income that with careful spending I'll be able to do basically what I want, when I want, and I intend to take advantage of that.
Edit - I should mention this isn't pie in the sky - pre-kids I didn't stay in the same place more than 6 months - I'm very used to moving to new places/keeping all my worldly goods in a suitcase, so actually having a base to come home to will be an interesting change from that.