I don't think faith is better than not having faith. I think everyone has their own style, who cares if yours is different from mine? But I won't deny it has some great benefits, at least for me personally.
It gives me routine in situations where routine is helpful, not boring. It gives me a set way to express something without having to come up with things on the spot. In really sorrowful news, it gives me a way to go about recovery.
If my father died tomorrow, I'd know to carry out his funeral ASAP and begin sitting shivah. After that, I'd go back to work and things like that, but I would still avoid a lot of festivities for thirty days. For a year after that I would still be considered mourning and be expected to say kaddish every day for 11 months (the last month of the year of mourning is more stepping back into the world fully again).
It's not the solution for everyone, needless to say. Still, while I don't believe in after-life, and I don't really worry so much as to whether God is real or not - since I like Judaism anyway - it's so very nice have that practice there. When I was a little kid I used to wonder what I would do if my parents died so much that I'd cry myself to sleep (I have an anxiety disorder, to make this clear, so I would obsessively worry about things that really weren't much in my control).
I don't pretend that there's evidence for God, or that I believe there's an afterlife, but I can say to have certain things embedded into routine has been good for me. I like spontaneous decisions - drives, para-gliding, sky-diving, SCUBA, and a lot of other things - but some every day things are good as well. Not to mention having an entire day where I'm expected to chill every week and just read, go to synagogue, and relax.
For some people, it's poison. But I think most psychologists also agree a routine is good. But it's how you use it more than the tool itself. Is it an enabler, or is it an opiate? I've used it to be an enabler to make situations I used to not have any control over imagining a lot more bearable so that I don't worry about it even half as much as I used to - because I'd have a course of action that gives me an expected routine in situations where I might not have been able to come up with them. Some people I know use it as an opiate. Which can happen with any belief (or lack thereof); a person has to know when it goes from being that enabler to an opiate that might lessen their ability to live to the fullest, or to sedate them from noticing a crisis (e.g. - "We don't have to worry about the environment, God will provide" - which I know fully to be **** and have never pretended deities would save the planet from human destruction).
Of course, this has more to do with ritual than faith. I believe, but I don't believe incessantly. If God was proven utterly false tomorrow, as I say, it wouldn't really matter to me, I still like Judaism.