The reasoning is this: if I know I won’t do it… I won’t sing it.
Even if I don’t know that I’ll do it, I feel uncomfortable about singing it. And then worship is ruined. There are actually songs that exist with lyrics about “lifting my hands” and there are some Christians out there who don’t lift their hands in worship. Now, is this right? Why would a Church sing songs that cut them out? That forces them to feel uncomfortable about how they worship? Why are we constantly singing songs about what we’re going to do anyway? Why are we singing any songs about what we’re going to do? And where we're going to go? And how it’s going to be? Is worship about me and what I’m currently doing or will do?
You already know the answer.
The impression I get from the Bible is that, primarily, worship is first and foremost about God - this is worship for everyone. But then, Biblical worship is reactionary or, to say it another way, it is about the doing - this is worship for the individual.
We have confused individual, reactionary, man-focused worship with congregational, God-focused worship.
Making matters worse, many people get their theology from worship songs and, shamefully, not from the Bible. So when you have songs that go, “do-do-do,” you get a theology that goes, “do-do-do.” And, after a while, you forget to sit back and remember: ahh… it’s all done.
In summary: lame worship + Biblically ignorant people = a disaster waiting to happen.
A disaster indeed.