Why did God even make me?

Have you ever wondered why God even made you? I have asked myself this many times, but even more sometimes, why did God make me a mother. I mess it up more and more. I seem to make someone in the house upset pretty often, I can't seem to cook the right things, and I make everyone do things they don't want to do. This came to me this evening, and I had to write it down, so that next time I can go back and remind myself of these truths.
I often pray that the children will see Christ through me. Maybe that not the right prayer. If you could see Christ through me, than I would not be filled with anything, I would be hollow I would be "see through."  Instead my prayer should be Lord fill me that I might be a reflection of You.
Like any parent I want to be a good example to my children, but I fail everyday, many times a day. I can't be the example these children need me to be, only Christ can be their true example. If I "could" be that good example for them, than the outcome of their adulthood would have been based upon my example, instead of Christ's example and grace, it would allow me to take responsibility for their outcome. Instead I know  I can't be this good and perfect example to my children, I only ruin them, if they have learned anything good from me, it is ultimately because the Lord has aloud them to learn it from me, for all good things are from the Lord. If they do turn out to be God fearing adults, I know it won't be because of me, but only because of the Lord grace, His faithfulness and example. I guess what I am trying to say is that my sinfulness and lack of being a good example just magnifies how perfect of an example and faithful God is. So why did God make me... I still don't totally have that answer, but I know He didn't make me and expect me to be perfect.