It's a personal decision. Personally, being in a loving romantic relationship has always seemed more ideal to me than being alone. Now that I'm Orthodox, I feel that being there for each other during trying times can help with salvation. It seems that whenever I'm really struggling, my husband in stronger. And when he's struggling, I'm stronger.Considering how hard it is to find a good Orthodox spouse, most men and women suffering from various childhood traumas, mental illnesses or scars from a previous sinful life, why look for marriage?
(I am on the fence right now, and looking for pro and con arguments).
However, some people may feel they can be closer to God not being married. One of the saints I seriously considered as my patron saint was Saint Thekla. She resisted a number of marriage proposals because she felt she could stay closer to God as a virgin, even defying her mother, who was concerned about her worldly life (some of her suitors were wealthy). She was under fire a number of times, and there was always another miracle to save her.