OK, so I keep hearing everybody complain about purling. They don't like to do it, some even avoid any project that has a lot of purl stitches in it. But I've never minded purl, and in fact, in certain ways, I find it easier than knit. You just slip nicely into the back of the stitch, wrap, and you're out. With knit, I have to come back around the stitch, poke into the front, wrap and pull back. (NOTE: I knit right-handed English style, if that makes a difference.)
I recently spent a lot of time on a garter stitch scarf, knit every row. Knit, and knit, and knit, and knit. I keep hearing that purl is just the backside of knit, and vice versa. So I kept wondering, what if you purled every row? Would it do the same thing?
So I ran a little experiment. Size 6 bamboo needles, 9 inch, and a hank of cotton yarn I found in the cloth store while my wife and daughter were looking at sewing machines. I cast on 40 stitches and began to purl. First, I discovered forty stitches is too wide for a good dishcloth. Secondly, I discovered that all that knit, knit, knit had become a habit when I unconsciously did one row in knit. Then I cast on 25 stitches and knit every row. Here, I discovered that my knit stitch produces a tighter fabric, with more even stitches. Looks nicer, made a nicer dishcloth.
The "all purl" garter stitch is on the left, the knit one is on the right. You can see the one row where I knit in the left one. The needles are pictured with it. If I practiced all purl a lot, it would probably get more even and make a nicer cloth. Meanwhile, the venerable all knit garter stitch is probably not under threat.