Appeal to the collective wisdom - telephone service

Over the weekend, Brenda and I were discussing dropping our landline. It just doesn't seem to make sense to continue paying for three phone numbers/two phone systems.

We came up with four basic objections;

• The first is emotional - we've had the landline number for nearly twenty years. it's widely distributed among family and friends. We have no answer to this objection.
  
  
• The second is the old chestnut - what if my battery runs down? That's answered by not letting the battery run down in the first place. Even if it does, and we lose power to the house, we have both the portable generator, the RV generator, and even a car recharger and one of the two cars would suffice to power/recharge the phone.
  
  
• Third is 911 - on a cell, the ability of CENCOM to automagically determine your address is shaky. We have no answer to this objection.
  
  
• The last is performance - sometimes/occasionally incoming calls will go to voice, and slightly more rarely we cannot make an outgoing call. We have no answer to this objection rather than looking into a picocell.
  
  

I know I have some of both types of folks (pure cell/mixed cell and land) on my FL - which category do you fall into and why did you make that choice?