Guys... let's just look at it from the rational standpoint. First of all, even if totally 'mishandle' your battery (just like yours truly does), it will still last for 2-3 years or so until it becomes too used up (I am on 90% original capacity after 550 load cycles - this is a 12 month old rMBP - yes, I go through 1.5 load cycles per day). If you are very careful with your battery, then it will last maybe 3.5 years - remember, load cycles is not the only factor, age is also a very important one. Let us, for the sake of the argument, assume that you will get one year more out of your battery. A battery replacement costs $199.
If we want to keep your computer around for 4 years - I, who am mishandling the battery, will need to replace it after 2 years. So I will pay $199 for it over the course of 4 years. You, who are very careful with it, will need to replace it after 3 (or maybe even 3.5) years - so you are paying... also $199. The resale value will be the same, maybe you will get $20 more for the 45 extra minutes battery time. Even if I have to replace the battery twice, I will only need to pay $199 more then you - its $4 per month over the course of 4 years.
Now, let me ask you this question - do you really want to go through the hassle of watching your battery percentages and running around with the charger to save some $4 per month??? I think there are much smarter and more beneficial ways to save money.
If we want to keep your computer around for 4 years - I, who am mishandling the battery, will need to replace it after 2 years. So I will pay $199 for it over the course of 4 years. You, who are very careful with it, will need to replace it after 3 (or maybe even 3.5) years - so you are paying... also $199. The resale value will be the same, maybe you will get $20 more for the 45 extra minutes battery time. Even if I have to replace the battery twice, I will only need to pay $199 more then you - its $4 per month over the course of 4 years.
Now, let me ask you this question - do you really want to go through the hassle of watching your battery percentages and running around with the charger to save some $4 per month??? I think there are much smarter and more beneficial ways to save money.