OT: Followers are great...
#1: Mules... get to carry more loot out of dungeon crawls
#2: Alternate target for enemies
#3: additional source of damage in fights
Just pair up right... My assassin didn't take a follower until I got a DB Initiate so I could have a proper stealth follower.... My mage usually likes a tank, but is on AoE (Adept) level destro right now... so a 2nd mage follower is far preferable so I don't keep blasting them to death

. With my warriors, an archer or mage follower is best, and my archer always wants a tank.
They fall behind if you sprint a lot in the wilderness which is when there most often missing for a battle... in dungeons moving pace is slower and I ditch them a lot less often.