I would assemble them, but not press, if the pressing is what stops you. I find that once I put stuff away, I'm unlikely to take it out again any time soon. There is always another quilt I want to make.
So, if you only find pleasure in making blocks, then make blocks. No one said you had to make quilts. The completed blocks will sell well in your estate sale.
That's just my take on the situation, though.
bkay