I don't often feel a sense of "holy ground" even in church, and I say that as someone who is well aware of my own failings and sinful habits.
The simple reason is that I think God is everywhere at all times - He's in and through us no matter where we are. I've had too many "spiritual experiences" to doubt that.
I fail to see the difference between God being "in me" at home or driving the car, and God being "in me" in front of the altar, or if you like 'standing on 'holy ground'.
Going by the number of disused Churches these days, the "holy ground" seems to be taking a bit of a battering. I'm Catholic now, but when I was Presbyterian from late 1982 to late 1991 (although I was still technically Presbyterian for a few more years leading up to my conversion to Catholicism circa 1996 or 97) there were three Presbyterian Churches in our parish.
Only one of them is now a church. I think one has been modified to a home, and the other appears to be in limbo. A few months ago I happened to listen to a "Big Band" perform in the hall attached to that church and that's when I became aware it was no longer a church.
The Presbyterian Church where my parents got married way back in 1953 is now a night club I believe, although the building itself is "heritage listed". So much for "Holy Ground"!
This Presbyterian Church was constructed in 1885 to a design by influential architect Richard Gailey, while the Sunday School building was designed by honorary Presbyterian architect Alexander Brown Wilson and built in 1906. The church was built at the height of the Valley’s residential boom to...
heritage.brisbane.qld.gov.au
PS - I think the only reason I was baptised Presbyterian was due to the fact my parents got married there. In the same article it mentions "McWhirters" (see below). My mother worked there before she got married. In 1953 there were strict denominational rules about who could marry in which church. That may not be completely gone now - I remember one past priest saying to me that an Orthodox priest or whatever seemed to think he was the devil when he asked if he could carry out a combined Orthodox / Catholic wedding (or something similar).
But I digress. My father was unbelieving Catholic and my mother Anglican. I suspect she walked around behind McWhirters and sweet talked the Presbyterian pastor into marrying them. He obviously agreed but the quid pro quo (there's my latin lesson for today) was that any offspring would be baptised Presbyterian. I was baptised in the same church the following year. So I didn't exactly come from a strong Presbyterian family background. My parents didn't even go to church.