Sterile seed starting medium?
I understand that a lot of people recommend, or even say its neccesary to sterlize or buy sterile seed starting medium for starting vegetable seedlings . I heard some even go as far as sterilize prebought "sterile" mixs a second time. The same people cringe at the thought of using compost, or garden soil for starting seedlings. Now i havent had a lot of experience starting my own seeds. But I find it really hard to believe that it's absolutely necessary to sterilize your seedling germination/growing medium. Its well know to thin,or remove the excess seedlings when you sow them to thickly in your garden. Beets are a good example because their is actually four seeds inside the seed capsule, so thinning is almost tedious. If the plants in nature doesn't need sterile soil, why does our seed starting medium need to be sterile? I understand, because its not in nature, its in your spare bedroom, or your windowsill inside a completely unatural house.. But nevertheless..
So, do you guys sterilize your seed starting soil?