The point I wanted to make about the purpose of worshiping in a sanctuary is in my OP. I have no need to repeat it.
I do believe you are simply looking to nit pick, and I'm not going to reward you.
The point I'm making is, people don't go to a Reform synagogue to worship, and, the same has been my experience in Conservative synagogues. They also are not interested in worship at all.
Because of this, the verse that was brought regarding "dwelling" is not a very convincing/compelling reason to worship in a sanctuary for a large group of modern American Jewish people.
Further, the concept of G-d dwelling is a very high-level complicated subject. Reform congregations, Conservative congregations, and possibly Orthodox congregations simply don't "go there". In order for a person to find people who are interested in making a dwelling place for G-d in their sanctuary they would need to go to Chassidic or Ultra-Orthodox congregations which are the minority in America.
Moving outside of Judaism, I don't think that any of the other Abrahamic religions have something comparable to the Shechinah ( G-d's aspect which is capable of dwelling among us ). The closest is the Holy Spirit, but that's the Ruach HaKodesh, not the Shechinah. Maybe someone can inform me about it? I don't know.
Now, regarding this idea of nit-picking: the OP made a claim: see below:
My dear friends, it makes a difference to go to a house of God, and worship him there, with a faith community. It just does.
And the evidence supporting this claim is: "It just does"? I think that's what was said? Or perhaps the evidence is in Shemos/Exodus 25:8? The OP says it's "obvious"?
It's not obvious, that's not nitpicking, it's honest critical analysis. The OP makes a claim and doesn't support it. The OP brings a verse for evidence, I brought a verse refuting it. That's not nit-picking, it's debate.
I think the OP is wrong; you think it's right. That shouldn't be a problem unless there is no other evidence to support the claim. If so, I rest my case. The OP is flawed, the argument is weak.
The simple truth is this: In Judaism, a sanctuary is not needed for G-d to dwell. All it takes is two people learning Torah L'shaim shamayim ( for the sake of heaven ). Further, in Judaism, who a person congregates with is more important than where they congregate. References available on request.
We do the Amidah and the Aleinu every Shabbat.
Both are edited, reduced, and incomplete. The parts about G-d dwelling are omitted.
Why is this important? It's important because it renders the verse 25:8 from the OP irrelevant to a Reform congregation. The people don't seem to care about whether or where G-d is dwelling. And the same is true for Conservative congregations in my experience. I don't know about Orthodox, because I skipped over that and went to Chabad. But the OP does not make any qualifications about to whom the verse is supposed to be relevant, and claims it's obvious.
No, it's not obvious. And the sanctuary is not a dwelling for G-d if the clergy and congregants are arrogant and have contempt for Torah in word and in deed. And that is what I am seeing ( at least from the clergy ) in the Reform and Conservative movement. Contempt for Torah, and a desire to be secular. So really, the evidence in the OP is valid for a small subset of Jewish people, that's all. The OP is speaking to a minority. And that makes it a weak argument.