Singer 212W is a good double needle machine. The problem with double needle machines is that they only do one width of seam. If the machine is set up for 1/2" between the stitch lines, that's all you can do unless you change a bunch of parts. They also do not make different feet for them, so if you want to sew a welt, it's not possible.
No one lives forever, the trick is creating something that will.