Some of you will have a chuckle over this. Around 1980 I saved up for a "fancy" sewing machine. It had 11 stitches which included some stretch stitches as well as some to finish raw edges. In the 34 years that I owned it, I used three on a regular basis. Some of the stitches I never used at all.
A couple of years before some gears crumpled in the fancy machine, my mil's 1948 Singer 15-91 was past down to me. I love how it sews and it started my love for vintage sewing machines. I replaced the "fancy" machine with three vintage sewing machines. The straight stitching Singer 15-91, a simple straight stitch and zig zag 1965 Kenmore 50 and 1990's(?) JC Penney 6923 that I use for the stretch stitches.
I've been very happy with "downgrading" to the vintage machines and do not feel the need to upgrade.