When I make play/outdoor/picnic quilts (usually with denim as the backing) I use 1/2" seams. I know that these quilts will be well LOVED and used and want them to stand up to the use/abuse. These are usually just really simple patterns so triangles and little pieces are not an issue.

For big patterns in the quitls the ½" seem seems to fit well.

Before I had a 1/4" foot with guide for my machine I just made the seam allowance the width of my sewing foot. Each seam was the same so it worked great.

My sister, the tailor and general sewer, feels the exact same way! "Only a quarter of an inch?!?"

Go forward in faith! It's not as hard as it appears at first. Besides, fudging with a larger seam allowance means your squares and corners will be less likely to match.

You will also use a lot less fabric.

I started with a larger seam when I first started but soon found that anything with triangles was doomed to lose points. So I struggled through the 1/4" challenge. Now, I have a hard time sewing anything bigger than a 1/4"

I found that sticking with the 1/4 inch foot with guide is the perfect solution... For me!!! When I first started I did
practice strips to make sure I was doing a good qtr inch.

I use 1/2-inch seams when sewing flannel quilts. For cotton I use 1/4", which seems easy enough for me (she said, as she took a sewing break to rip out a 1/4" seam that she sewed at some odd measurement... lol...)

I love the 1/2" seam for quilts for toddlers...little more substantial and wears better. If there are points involved always 1/4". My seam depends on the project, just keep it consistent throughout...lol.