My backyard was full of broken glass, metal, and plastic, buried about a foot deep. The previous owners had buried lots of trash in random holes they dug all ov

My backyard was full of broken glass, metal, and plastic, buried about a foot deep. The previous owners had buried lots of trash in random holes they dug all over the yard. I spent the past few months sifting it all out and putting back the “good” soil. Now, I wonder if I should have just thrown it all away.