Yes, it is hard to part with a machine. I sold an older Esante last winter. I upgraded to a bigger embroidery machine so could not keep the older one. My older sewing machines are vintage, and my backup is a 4 yr old Bernina that I love for small projects, and garment sewing.
Knowing my machine went to a good home helped me with parting. I keep contact with the buyer, so it is not a painful feeling. She is happy with her machine, and this makes me glad.