For me, the experience of planting seeds is different from planting seedlings. With a seedling, the plant is established and a good size, so I can see immediately how it is and visualize how big it will get. With seeds, it’s a whole different experience.
Some seeds are round and big, like nasturtiums, but others are small and thin, like zinnias. The zinnia seeds tend to be dark, like the soil, so I have to watch carefully to see how many I put in a hole and where they are. I try to space them out so they won’t crowd each other. That is hard to visualize when the seeds are almost invisible!
I also study the spot where I am thinking of planting seeds. I have one bed in full sun that did very well last summer with tall sunflowers in the back, medium height tithonias in the middle, then shorter zinnias in the front. I planted based on how tall the plants would get. I need to feel rested to do that so I can imagine the end result. Trying to plant seeds after an extended period of gardening is not productive for me, so I plant seeds early in the day. The end result, as you can see in the photo from last year, is worth it.