Brief Answer:
Sure, but what follows from that? If you conclude there’s no God based on this idea, you fell into illogical thinking known as the genetic fallacy—deciding whether a claim is accurate or not just by how one came to have the belief. To evaluate a claim properly, you would first have to determine if the claim is accurate or not based on the evidence, and if finding it is inaccurate, then you can consider how this false claim came to be believed.

Detailed Answer:
Yes, I see Christianity as a crutch—one that has genuinely supported and healed me.

But let’s turn the question around: What’s your crutch? Is it a relationship, a bank account, a career, or perhaps entertainment? What gives your life meaning? More importantly, can that crutch truly support you? Christianity offers a foundation strong enough to withstand life’s challenges. What evidence backs your belief in your chosen crutch? Is it reliable enough to hold you up no matter what life brings? Because all things you appear to have control over in life, even those you worked your entire life to achieve, you hold in a wet paper bag. Anything you have can be lost, in a moment, and entirely beyond your control. 

Christianity has the support necessary to stand all the tests life brings, what evidence supports your belief in your crutch being accurate, and sufficient to hold you up through anything and everything?

Additionally, it’s natural to have these longings for something beyond yourself and what you can do. If we reflect God’s nature, then we should expect to have longings for things of God’s character, such as love, mercy, justice, wonder, etc., and maybe do project these into our thoughts and hopes about God. If you think belief in Christ is inaccurate because it only comes from these longings or hopes as a crutch, you are falling into an error in thinking known as the genetic fallacy. Whether we seek Christ as a crutch or not is secondary, the primary question still is: Does God exist. And the primary question gets answered with reasons and evidence, not opining where beliefs came from.