I simply print the photos I want to keep, and put them in photo albums like my parents and grandparents did before me. I don't expect my children to be able to explore my digital archives when I'm dead in 50 years or so, so anything I want to be found then I print or otherwise place on a physical medium that's readable without computers. The less important stuff can stay archived on hard disks as plain files on a FAT…
Yeah and I think people overestimate how much interest their kids will have in old photos of their ancestors. I cleaned out boxes of photos from my late parents house. Lots of pics from my childhood years, somewhat sparser selection of older photos. Never look at any of them. I have a framed photo of my parents on a shelf; that's enough. I also basically stopped taking photos of stuff about 15 years ago when I realiz…
Your kids will want to see other people in those childhood photos, more than they'll want to see 100,000 photos of their own faces. You, when you were younger; their now-gone grandparents; that friend they had for two grades before one of them moved ("OMG I totally forgot about them!"), that kind of thing. You'll get way more than enough photos of your kids, so far as your kids themselves are concerned, without even trying—it's the others you may neglect.
Now, for your own purposes, yeah, you probably want the photos of your kids more than anyone else who might get in the shots—but try to think of them and snap one or two of other people in the room, when you're taking e.g. birthday photos, or pan around from time to time when shooting videos of them. They'll eventually get more enjoyment out of the stuff, if you do.