Same here @Dovefromabove I grow food and flowers from seed, have done for years.
I love growing things from seed, I just love growing things. But it isn't always easy, even after years of experience, to get things right - right soil, right amount of water, heat and light, especially with our changeable weather. Some seeds are easy, others need special treatments and I'm not always successful. I grow all sorts from seed, both edibles and decorative. In early spring I set up my propagator in my bedroom, so I can look at what has popped up overnight, and commandeer all the south facing upstairs windowsills for seed trays, except one for my dahlias. There are peas and beans of various kinds (it's fun to experiment), cabbage family, courgettes, as well as sweet peas and other flowers for the garden or greenhouse.They all have to be potted up individually which takes time and space, and be kept safe until it is warm enough to plant them outside. Even now, at the start of winter, there are loads of plants in my greenhouse for protection from the winter weather, which can be vicious here. By April it will barely be possible to squeeze inside to water and care for them, and the cold frame will be full too, as well as all those windowsills. I've got the space, no-one to please but myself and happy to admit to being mad as a hatter, but not everyone has the time or the space or the freedom to do what I do, even if they would like to, and as others have said, there are lots of other obstacles to getting to the end result of an edible crop. It does give me enormous pleasure when things work out well though
This year I grew tomatoes and spring onions from seed and the results were rubbish.I grew a sunflower from seed too, now I have loads of seeds for next year.I don't buy plant seeds because they are too expensive for too much effort. 200 seeds for £1.59? I don't need 200 plants, I don't have 200 pots so unless I fancy going to a car boot sale to sell all the plants for a profit, I don't see the point. I'm too impatient to wait for something to grow big enoug to fill a space in my borders.
Growing flowers from seed is good if there is a large area to cover. I often need only one plant or maybe three. It's easier to buy one 9cm potted plant and do cuttings to get another one or two.It really all depends on the scale of gardening. It would be crazy to buy 20+ 2l plants, each one for close to £10. But it would be also crazy to buy seeds to grow a single plant.