Dear one, as you already mentioned, the purpose to go to church is for God, to worship Him and spend time in the Spirit, and to fellowship with other believers. Now as for meeting some one, that is why we pray to The Lord for the desires of our hearts(including a Godly Christian lady), whether that would be in the church or somewhere else, and then just trust Him for his perfect will for your life. I think praying for trusting His will would be priority for you, and then everything else would fall into place(whether meeting some one, or even not meeting some one, because that would be His perfect will for your life). Don't allow this situation make you bitter towards the Lord. All Christians go through some kind of situation, and we all can trust that the Lord knows what he is doing. I am single too and I am trusting also God's will. It's not easy, some days are harder than others, but make sure you put God first and trust His will. He already knows what your needs are. You can trust Him. I will pray for you brother. Hang in there. God bless.