Aggressive Catch Dog - Good or Bad?

I don't let mine get outa hand but I do let them be bulldogs....I would rather have to rein one in and tone him/her down than try and get one to be something it ain't never gonna do. All my bulldogs are good with my kids/other dogs etc. some are a little high srung when young but like I said...tone them down a little and the calmness does come with age and use. I do have a few that will not be so friendly with strangers at the house but I'm quite ok with that. A dude I know was hunting with me a couple weeks ago and my 5 yo was climbing around on the bulldog in the truck and he said "wow, I can't belive that dog don't bother her" ....my reply was "he had better not"..