As your last two topics have been entitled:
Why It Is Right To Do Good To Others
and
Maximizing Freedom is the Goal of Morality
I think you might find it useful to read a couple of essays by John Stuart Mill called
Utilitarianism and
On Liberty (if you haven't already). I think you'll find them enlightening (and give you some additional ammunition in these debates
).
The first link below is the Wikipedia article on John Stuart Mill; the second is the article on his essay
Utilitarianism; and the third the article on
On Liberty. The latter two have links to electronic copies of the essays.
John Stuart Mill - WikipediaUtilitarianism (book) - WikipediaOn Liberty - Wikipedia
'I can't even fit all my wife's clothes into a suitcase for travelling. So you want me to believe we're going to put all of the planets and stars and everything into a sandwich bag?' - q3psycho on the Big Bang