Fair enough.
50mm on a crop gives you something closer to the classic portrait length (50x1.6 =80). But the 24-105 would have that covered (albeit without the low f-stop). My old 28-70 f2.8 was good for portraits, but on a crop sensor I missed the width.
But as said, it depends what you're used to. I've had a 50mm prime on my crop sensor for a couple of years and am used to it, but I recently got a 35mm prime (vintage m42) and it's taking a bit to get used to the width.
It also depends on what you're shooting. In some senses it's actually good to get a kit with a lens or two and then work out what you're shooting more of and what the limitations are of the kit you have.