its called pve. its a socializing, teamwork, chatting, co-opping, trolling abit too. (im sure you do understand trolling :p)
imo i prefer eu1 but it is only fun when min. 10vs10, eu2 min. 20vs20 and how often do we get that amount of players? sure often on dtv but only half of them also like eu1
edit: actually, dtv is great for training cluster fighting, awareness and overview. OP bots and the amount of them make up for their lack of creativity