Because the book of Hebrews spells it out, FK. It says that faith is hope. So, when we worship, we worship in hope. And what is that we are hoping for? Life-everlasting, salvation. Take that out and see how many people come to church to declare His glory. People go to church because they want something from God. People want to live. People want to believe this is not all there is to it. It is the hope that makes our faith meaningful. God is meaningful with or without us, whether we pray or not; whether we follow Him or not.
The Bible uses the word "hope" in at least two different ways. One is in the conventional sense of "I wish that". But the other, which is still an accepted use of the word today, involves a much stronger sense of certainty. For example:
Acts 26:5 : 6 And now it is because of my hope in what God has promised our fathers that I am on trial today.
Rom 5:5 : And hope does not disappoint us, because God has poured out his love into our hearts by the Holy Spirit, whom he has given us.
Rom 15:13 : May the God of hope fill you with all joy and peace as you trust in him, so that you may overflow with hope by the power of the Holy Spirit.
There are many others. But just in these, I really don't think the concept of "wish for" can be inserted for "hope". Do you think that Paul wishes that God will keep His promises, or is he sure of it? And, is our God the God of "wish for" or is He a God of certainty?
Take that out and see how many people come to church to declare His glory.
Maybe some people do, but I do not go to church to strengthen my "wish for" that God loves me or will keep His promises. I haven't needed that in a long time. I do need to worship Him and hear His word, among other things. But I really don't think I understand your underlying point. I do go to church, but it is not to obtain my salvation. If the world suddenly came to an understanding that salvation is not had by going to church, then I would still go to church. Is this what you are talking about?