Why have the Cleveland Browns had so many big, bruising backs?

that just seems to be the place were they are strong at like all the other teams they have a special place like green bay they have had some insane QB bart star brett farve aaron rodgers. it with the draft i think they thought they cold get someone good late in the draft like when they took colt mccoy late and they are planning for the future so they got more draft picks for next season i grantee the next draft will be great since they got many draft pics for it.