I do adjusting as desired, don't like doing my own math.

sometimes, not all the time

I very often use a pattern. I can make the design more personal with fabric choices and quilting. When I see a design I like, I'm anxious to just going, so I don't bother to redesign it, if I'm happy with it. I have often adjusted patterns and designed my own as the spirit moves me.

I look at patterns but then do them on my own to use the cuts I'd get my accuquilt studio cutter. I always tweak it. I just bought the EQ7 for this reason.

I do use a pattern or magazine designs

I am a beginner so I appreciate guidance from a pattern. I do adapt it to the materials I have for the project, work out the math and color placement, but I am not yet into extremely intricate design, just feeling my way adding and reinforcing skills as I go.

Some of those patterns that start with 20 different fabrics give me a swirly feeling! I appreciate the quilts made from them and the effort it takes, but, not for me. I usually make it up based on a picture, idea, etc. Mine are mostly scrappy, very basic, but those are the ones I like best.

Me too! I'm a soon-to-be quilter, and I've been wondering whether I'm crazy to consider trying to make my first quilt without a pattern. Or rather, with a pattern I design myself. Knowing that a lot of people quilt without patterns is making me feel better about the idea.

I seldom use a pattern either. I usually just draft my own.
Especially when I'm using machine embroidered blocks.
Or sometimes I look at a pattern and make the quilt.
Making changes or adjusting the size of the block/quilt
to make the quilt mine.
Occasionally I will come across a quilt that I like and have to use a pattern.

I mainly find a block or a piecing idea and then go with that method. I don't make quilts that have the same fabric in the same blocks, all sewn together to make a top. Every block is different fabrics, even if the block is the same design. The size ends up being what I want, so buying the amount of fabric is always a guess, of which I usually get more than what I'll need. I have made 4 OBWs, and that is buying 6 repeats of the print plus some extra for a border and the back. That is a technique of cutting repeats and piecing together hexagons cut from strips. It totally changes the print to a whole new look.
I've also made 4 PP quilts and those each are based on a pattern, but I used my own choices of fabrics, so the quilt becomes my own.