Acorn stop tempting me to change my mind your work is lovely
I would suggest you keep the machine, as it is already a sunk cost, especially when you add in the extras, like thread and stabilizers, unless you need the space they take up or the money you would generate from the sale. In which case, move them on out of there and don't look back!
As I said before we almost all have multiple features and stitches on our machines that we never use. But they are there if we ever choose to use them. You and I just happen to have embroidery modules we don't use.
If a few years down the road something possesses us to ME we are ready.
Mine is a smallish Brother SE 400 combo machine limited to a 4" x 4" field. I was shopping for a new machine, just looking about, wanting a computerised machine for the first time. One night at an all nighter at the local quilt shop a gal had one of these. She insisted I sit and sew. It purrs. The stitching is brilliant on it. Has a zillion buttonholes. And, by the way, it machine embroiders, which she had never used and couldn't tell me about. I checked them out online and it sounded good and price was fair, USD $399 at the time. I thought about it for some months, maybe a year, and would occasionally look at one in a shop. One day I looked and they had reduced them for clearance the day before, now only $299 USD. Brought one home the next day. Next day did a red work embroidery on a shirt. Embroidered a bouquet of flowers over a shirt pocket the next day. I had just enough variety of ME threads to make it work. Then I found Urban Threads that week with a site wide 50% off sale. I used 2 of those designs on a project, never finished and......haven't done a stitch since. That was in 2013.
Occasionally on sales days I would pick up more thread, so I could probably do most of the designs I bought and for several years I went to monthly meetings of a Machine Embroidery group and still, nothing. Two of those gals do ME every single day.
But I don't feel guilty about it. I just stopped buying thread for it. I do occasionally look at UT or EmLibrary to see what the current free designs are. I also download every size, just in case I ever get a machine with a larger field.