sewing and a petty annoyance

is replacing bobbin thread half way through a project annoying to anyone else besides me? there i am, sewing away and the next thing i realize is i have sewn close to 3 feet with no bobbin thread. can there be an alarm built in to signify an empty spool or a running low light - or better yet, why can't we just sew with 2 spools of thread? does this option even exist in affordable machines? i would gladly splurge for an extra spool of thread if it meant not having to stop midway through a project to wind a bobbin.

if anyone has the scoop on bobbin-less machines, can you leave a comment - pretty please?