"We've been married 40 years and never had a fight." Couples like that are few and far between, if not imaginary. While most folks have a healthy squabble every now and then, many try not to do so in front of the wee ones. Minor disagreements seem harmless and sometimes negligible in the presence of youngsters but when tempers rise and voices escalate, doors are often shut to protect the image of a united front on the parents' behalf. Others prefer their kids to see it like it is and make no effort to mask honest and sometimes harsh conversations. How do you handle arguments at home?