As you say, parts, accessories and info on AK's is far easier to find, and the Russian ammo that it was built for, like Wolf is plentiful enough, and somewhat less expensive than 223
Although the Galil DOES have a certain "Cool factor" compared to the rest of the AK family and may even use AR mags, (I'm not sure about that but the Israeli's had a lot of M 16's when they made the 5.56 Galils ) .