I know the "don't wear jeans" mantra but believe it applies only to heavy 100% cotton denim. There are jeans on lighter-weight denim that contains Spandex and maybe poly, making it faster-drying and very comfortable, and I do take those.
Recently someone posted about Jag pull-on jeans with a wide flat waistband, praising their comfort. I bought a pair and they are fine---especially the flat front---but not exactly what I want. Then yesterday I found NYDJ pull-on jeans at Nordstrom, in black. They are very soft and comfortable, and also dressier than the Jag jeans. They are called "Millie" ankle pants and cost $110 retail, but you can find them for less on Amazon or 6pm. If you wear small sizes they have some at Nordstrom Rack:
And I just found a pair in denim blue on Amazon for $24.99.