Are you afraid God won't provide a good spouse for you?
Yes, God has not promised these things, He has only promised salvation to those who correspond with His will/grace. I have great confidence that God will provide me the graces I ask for in-order to save my soul. But I have no guarantee that I am to be married. It's more an issue of impatience. As we get older we tend to become more aware of our own aging, the skin is not as bright and glowly as before, it starts to sag, become dull and lines form. There is also an issue with temptations, is is very hard for young people to deal with sins of the flesh, some more than others. Yet despite St Paul saying it better to marry than to burn (in hell), there is almost no recourse to marriage due to the economy, housing ponzi and feminism. For a person to marry the stars have to align, and perhaps they will do so in the future for me, but for now I must suffer and hope.