Right, you are justified in having a 4x4. Other 4x4 owners? You do not have special needs over other road users. Your children are in no more danger than anyone elses. Well, apart from them being much more likely to die if they are hit by those drivers who have 4x4s of course.
(Oh and if you had an ordinary size car by the way, you would be able to park in a single space at Sainsbury's and John Lewis.)
Thanks and a very Happy Christmas (to the protesters, who are actually trying to do something positive for society this festive season)!