To re-baste or not to re-baste?

That is the question. I was so excited to be moving on with this project. I finished the quilt top and carefully basted the three layers together. Or so I thought. I moved the rug out of the way, I taped the backing and batting to the floor. I got down on my hands and knees. I basted every two inches. I really thought I did a good job. Now, as I'm quilting it I realize I must not have done a good job because I'm having to take out the pins and really re-align the top as I go along. I've done over a third of the quilt and it seems I will have to rebaste most of the rest. Extremely extremely frustrating. I want to push through it but I've spent so much time on it-- choosing the design, picking the fabrics, cutting, sewing, aligning, trimming, picking out backing, laying it out, basting, choosing a quilting design and all the teeny tiny steps in between. I MUST rebaste it. The whole quilt will be second rate if I don't and I'll never be able to think about it or look at it if I don't. I definitely feel guilty when I think of other projects where I didn't take the time to fix mistakes. Quilting is a true love of mine and I want to be proud of my work. So, back down on the floor I will rebaste the quilt. There's a few hours I'll never get back...