one of my first orchids I bought online inadvertently was a seedling. I didn't even realize at the time and it did ok.
You kind of have to start somewhere. Seedlings even taught me quite a bit on how to care for the adults cause if you can keep seedlings alive then an adult plant should be a breeze.
But it is true that you end up losing a lot of them. The one I showed just a few days ago is already in orchid heaven.
The main thing I have learnt is to get healthy seedlings. It makes all the difference between success and failure.
Some places sell amazing seedlings, others arrive like this: