Teachings about Daniel 8:14 are the pillars on which Seventh-day Adventism is built.  Without this teaching there would have been no Adventist church. 

One of the most lamentable consequences of Adventist teachings is the nearly total isolation of its members from the rest of the body of Christ. 

I was sure that my friend would "see the truth" in our studies and I would help convert him (he was Christian, mind you – just not an Adventist). I never imagined it would be the other way around!