Christians tend to take small verses out of the context it was written in, and try to put themselves and others back under the law which belief in Jesus abolished.
A good example of taking things out of context to support an arguement is the person who answered to look at verse 13 for support that it was an individual's choice.
In this case, the letter of Corinthians was written to address a particular abuse in the Corinthian church. You need to look beyond this, and find the spiritual meanig underneath.
And if you question the Orthodox Christians about this, we would need to also point a finger at:
1. Catholics. Why does the Pope cover his head (and the bishops) when he prays? Why do they have such ornate churches, against the commandment not to worship false images?
2. Methodists. Why do they support gay marriages?
3. Baptists. Why do they insist you are not saved if you are not baptised?
4. Pentecostals. Why do they say you are not saved if you do not speak in tongues?
And just so everyoen knows I am an equal opportunity criticizer, and simply pointing out some examples...
All Protestant churches also violate some "scripture" if you nitpick the bible out of context: allowing women to speak, women to sit with the men, women (and men) wearing earrings, women praying without covering their heads, eating forbidden foods, hanging out with undesireable people, not hanging out with undesireable people, judging others (including other Christian churches), playing music in church, not playing music in church, dancing, not dancing...
I always say that God made scripture a tad confusing on purpose, to keep us from falling back under the law.
The most important verse to keep in mind is John 5:24 "I tell you the truth, whoever hears my word and believes him who sent me has eternal life and will not be condemned; he has crossed over from death to life."