I have the same excuse to buy (two small daughters). Want!
The Verge has a pretty good article about suggesting we actually wait for some reviews this time. The home button has been an ‘escape hatch’ that is ingrained into Apple users muscle memory, and swiping up is ingrained as a way to scroll internet pages. The faceID seems intuitive, but may be a lot less practicle, for example adding a crucial couple of seconds when taking it out of your pocket to pay for something in comparison with the touchID. Plus Apple was working hard to get touchID under screen and couldn’t get it to work (at least based on rumors).
The notch isn’t a big deal to me. Because OLD is totally dark, the notch doesn’t actually exist in a lot of cases (watching videos, looking at pictures). It’s basically a tiny additional screen for notifications in general use.