Stone Chimney Problem

[SallyCade Holmes]

Recently purchased a 2 family property in upstate New York and got the news from a chimney specialist that the stone chimney may not be worth saving. It was built in 1930 and the chimney is pulling away from the structure. It seems the stone tiles on the inside were laid without the correct mortar and it was not kept up by the previous owner. Curious if anyone has dealt with this and what the process has been like for you? I'm relatively sure it's going to be less expensive to remove the chimney and build out the exterior wall. I'm meeting with a contractor to explore options next week.

Additionally, are there any fireplace alternatives that folks love? I was really looking forward to having a fireplace.