Before I got my longarm, I used decorative stitches in straight lines with my walking foot on my quilts. Finished lots this way!
You may also be overwhelmed by the fabric ... do you have it sorted nicely into projects or colourways? Is it easy to see / find what you want to work with? Maybe a step to pique your interest is working with your stash a bit to 'find' groupings you want to put together into a quilt?
I also agree with the posters suggesting to find a guild or group or cause - working with others who are passionate and enthusiastic is wonderful!