Hi Sheilajeanne,
I hope you enjoyed the course and you should enjoy the Seiko. Once you get the bug, you will always be hooked and you will figure out a place for that next machine. I love finding and rebuilding the old ceased up Singers, bringing them back to sewing a nice even stitch and then setting them to do one function. My wife thought I was cracked, nuts, gone over the edge (I only had six) but it is just a relatively inexpensive rebuilding hobby (addition) like some people are into rebuilding cars, model trains, hockey or golf. So I can see how easy it could be to collect a few machines. On the production side of the coin if you were producing a particular item that involved a lot of steps or shapes or large variance in thickness it would probably be more cost effective to have multiple types of machines set-up that were better suited to do certain individual tasks.
Come Wednesday and for the next little while I am going to be down to two sewing machines but....
Addicted
Keith