As long as am happily married with a woman I love, I don't think there's any need for me to marry more than one wife. It's completely uncalled for, evem if women outnumber men 10 - 1.
Let's even look at it from the perspective of religion which happens to be a driving force with our lives revolving around it's practices. I don't think religion, islam and Christianity, allows marrying more than one wife for a man. It's very clear in Christianity, the only time a man is allowed to marry again, is in situation where the marriage has been dissolved or the partner dies. But even the process of dissolving a marriage which is divorce, Christianity still doesn't favor the act.
On the part of islam, many misconceptions have been made, islam doesn't condole marrying more than one wife. The religion quotes the prophet responding to a follower's question on the said subject during his life time. He was quoted to have said a man can marry more than one wife only if his able to love them equally. As you know, it's impossible to love two people the same.
Drawing from the above, i don't think there's any moral or spiritual sense which indulges a man to marrying multiple wives. Hence, i don't think, in fact, i know I can't marry more than one wife, with exception to maybe an unfortunate divorce or loss of my partner.