Indeed, most SDAs are respectful of other denominations, and are very nice people. I don’t know why a vocal minority feel the need to do this. Some were very mean to me in another thread and would ask me loaded questions and implied I was in a state of grave sin, even after I asked them to stop, repeatedly. I’ve never in my life met an Adventist like this, and I have known a lot of Adventists, probably more than most people. So it can’t be the SDA per se that is responsible, but a small, aggressive movement among the SDA which seeks, contrary to church policy, to aggressively try and proselytize among other denominations. Even among people like me who observe the Sabbath. My mortal sin apparently is that I also worship on Sunday, which no scripture says is sinful.
I actually like the SDA Church; they run an excellent network of schools and hospitals, and along with the Catholics, Methodists, Congregationalists, Presbyterians, Lutherans, Baptists and Episcopalians, were one of the great builders of universities and hospitals. And I have an excellent recording of Ukrainian and Russian sacred music by an Adventist choir which is on a par with the leading Orthodox and secular choirs of Russia, Ukraine, Belarus and Bulgaria (I combine all of these recordings of sacred Church Slavonic music and sleep to it, much of the time. Sometimes I sleep to Anglican music, Gregorian chant, Renaissance music, etc,).