God calls different people to different vocations. Most of us are called to the vocation of Marriage, others to the religious life (priest, brothers, nuns).
My great-aunt, was Methodist...and she felt called to a single life, she wanted to focus solely on service to God...and felt like married life would be a distraction. She was a army nurse during WWII, at her church she served in the highest positions a women was allowed at that time, played church organ, and taught sunday school. Her service to the community was a full time commitment....because she lived at home with her parents, and they supported her....she spent her days in service to varies activities in the community, including aiding handicapped war vets.
I know of other Protestants that have been called to the single life, for service to God. I think the reason that Catholics and Eastern Orthodox have a higher rate, is the fact that it is promoted, and held in high esteem. Where as in some Protestant circles, the life of celibacy to serve God....might be considered to extreme. I know my aunt to alot of flack for it....but she never looked back, jest keep her eyes on Jesus, and worked for His kingdom.
But that being said, the Church holds marriage in high esteem, it is a sacrament and refers the the home as the Domestic Church, because of it's role in shaping and molding the future generation, and future saints.
Peace be with you...Pam