I always worry that I'll be the moocher so I can understand when people arrange things as BigBen931 has explained. That way no one will ever worry about keeping tabs or be left wondering if thier contribution weighs up evenly.
That being said, I am usually the one that people believe to be 'not as well off', I am a single mum and have been for 12 years, so they all expect I do it tough. I probably do, but for all the other single parents out there, and probably to some extent, some two parent families, I do pretty well and sometimes better than others IMO (budget, it's all about the budget
). I live well for my means and there are things that I go without but if it's important to me, I can always make it happen somehow.
Weather my worth through my skills or friendship makes up for a $ amount I'll never know for certain... but it's something I make a conscious effort toward, to make sure I'm not a moocher