one thing i think that is important to remember is that our logic doesn't equal out to God's commands. meaning that if we believe that God is in authority of all, we mustn't equal our own opinions or desires with His.
that isn't that say one should be blind to all things. not at all. but what I mean is that if it comes to use making a decisions on religious beliefs and we're not ure what to think we so instead of seeking God on it (and sometime answers do come slowly) we instead seek human logic. but... human logic is not perfect nor righteous.
(of course if you don't believe in God as authority then this wouldn't be an issue anyhow)
I think Thao made some good points!
As a person who headcovers, and who has a household where the husband is the leader, I think I can safely say I do agree =) and I feel all commands given to us are of equal value b/c God gave them to us. if we start knit picking how important they are ... well... who would need God? that is a dangerous limb to be out on without much thought.
for instance: I don't head cover b/c it makes logical sense to me (truly it doesn't) but b/c I feel God's commands on feminine modesty and head covering important because He said so. sure I can see good that comes from it. and i can see reasons why I can find it a good and profitable thing... but really, when it's all said and done it isn't a command worth respecting on that point alone.
I mean to say that if you are looking for reasons to excuse what you feel is a sin, I wouldn be leery of going there b/c you WILL find reasons to justify it. but if you are looking to honestly seek God on an issue and not just take for granted that it is or is not a sin b/c that is what you have been taught, then I say go for it!! it's sad how often we think the Bible says one thing b/c we are taught his... and lo and behold it doesn't say that at all!