That said, I understand what the guy was saying in his speech. If you let Hashem into your home, meaning you are living with an awareness of God's will, expectations, presence, and ever-watchful eye, this has some "potential" benefits:
- It focuses the couple/family on a common goal/ideal.
- It helps keep people from acting inappropriately or disrespectfully toward one another.
- (Related to #1 and #2) It helps one transcend everyday interpersonal frustrations.
It happens to be that my wife and I find Hashem to be superfluous in this regard. The most critical part of being observant, as far as we're concerned, is treating one another respectfully, kindly, conducting oneself honestly, with integrity, and doing what we can to improve people's lives. You want to use Hashem talk? Ok, use Hashem talk. But the important thing is to walk the walk. I always maintain that I'd much rather have a neighbor who believes in fairy tales and is a gem of a person than a neighbor who's a rationalist purist but acts like a jerk. Hands down.
And come to think of it, that's probably part of the reason I like living in a frum community, even if the Hashem talk drives me bonkers sometimes. We live among so many fantastic families - true gems! That's the "ikar", the main factor in quality of life. Not believing in fairy tales - sure, that's also important, but in a sense I see that as arguably more of a "mehadrin" position.