Devout Christian here and no, I would not be offended. I am UCC though, and we're a left-leaning bunch. : )
Anyway - I can only help you understand *me*. I was on a "spiritual path" of sorts but was not a person of faith until I had a conversion experience I could not deny. If it had not happened to me, I probably would not have believed such things happened to anyone.
So...yeh...God talked to me, and sometimes still does. It was (and is) life-changing, Earth-shattering, and frankly terrifying. I know I'm not crazy, so I'm left with...faith. Though I was frightened, and sometimes still am, I find that life is much, much, much better for me if I "let go" and trust God.
I think for people who do not have such an experience, faith is a journey. And I admire them for embarking on to their (presumed) betterment without some life-altering vision to prompt it. They may talk to God (as I do) without any thoughts (or fears) that there will be an answer, because it helps them find their way.
Regardless of what one thinks of God or faith in general, an examination of what it truly means to follow a Faith might help you understand why so many people do so, even while accepting it's not for you. For example, Buddhists have no "God" per se but follow a faith discipline that takes them on a path that many admire/aspire to - but cannot achieve without truly embarking on that path. Does that help?
As an aside, it may not have been your post that offended. Speaking as someone who has a number of atheists in my life, I find that *some* of them can be very nasty about faith, casting all followers as idiots.