Does it matter that I don't do something that really matters?

I'm a developer at a small young tech company. I love to go in to work every day, and each day I solve little problems. But looking at the big picture - no matter how good I get at my current job - I will never really do anything "important." In other words, I don't do something that really "matters." Should I care about more than the fact that I love the details of what I do?