In my case it's very often the opposite: I have already thoroughly examined potential solutions Z, W, V, and Q, and have found them to be unworkable, decided that Y is the path forward, but am not sure how to implement it.
And then I have to spend two hours explaining X, and then patiently explaining why Z, W, V, and Q don't work before my colleagues finally agree with me that Y is what we need to do. Sure, very very occasionally do they come up with alternative T or perhaps K, that I hadn't considered, but I usually find that Y is still the way to go, or at least workable solution of similar complexity.
This is what working with people is like. You will need to make your case and get buy-in from people if you expect their support. You can't just bluntly expect them to respect your conclusion. If you fixate on your conclusion, you will be unable to explain your reasoning getting there, since it will seem irrelevant to you now that you are sure your conclusion is solid.
Understanding what doesn't work is also an important part of understanding the problem.
If One Is Truly to Succeed in Leading a Person to a Specific Place, One Must First and Foremost Take Care to Find Him Where He is and Begin There. -- Kirkegaard
I am often in a situation where a developer is asking help for Y and I'm wondering why he's doing that instead of Z, W, etc. He might be right in going for Y, but I still need to adopt his reasoning, if I am to defend the solution on a system and organizational levels, for reasons like budget/resource/risk/customer experience/technical debt, and ensure buy-in from other stakeholders (product managers, commercial stakeholders etc).
And then I have to spend two hours explaining X, and then patiently explaining why Z, W, V, and Q don't work before my colleagues finally agree with me that Y is what we need to do. Sure, very very occasionally do they come up with alternative T or perhaps K, that I hadn't considered, but I usually find that Y is still the way to go, or at least workable solution of similar complexity.