- He was not really ready to retire
- He really got excited about it in summer when something prevented him to come back
- He will hate to see Alonso get all the stardom at Ferrari
- He is still incredibly fit
- He owes Mercedes for his F1 entry and never payed back
- He trusts Ross Brawn to give him the right car and support in the team
- He is an incredibly competitive person and loves to race and win
- His long term speaker Sabine Kehm has terminated her contract with Maranello
And this are the Cons
- He is now simply too old to compete
- He would hate the fitness regime necessary over a long time
- Corinna would give him hell
- He would risk going out with a less impressive last season or last race than he did before
- He is afraid Nico would be faster
- The neck may still be an issue (glass neck)
- He may have prior obligations from Shell sponsorship in 2010
- Ciro Pabon disapproves (too much work load)

