I'm 36 and very busy working. Since I read some very educational stuff on here about batteries and charging (not at all like lithium ion batteries which I did know quite a bit about) I bought a charger and put it on my truck for a good 48 hours or more on the weekend and whenever I end up with my truck on the inside of our single file driveway I charge overnight (if it's been more than a couple weeks since the last one). I have noticed a much more energetic starter on my 2005 gm 4.8, especially when it's minus 20. Now that I know about it I'd rather use the charger.After thinking about the cold weather and such in the last week I realized all the talk about charging batteries is for retired people and hobbyists. It really is supposed to work like this: You buy a battery, put it in. A number of years later the battery gets weak. When it gets weak enough that is doesn’t do a start, you buy a new battery. Although, I myself have a thread on checking a weak battery, I did it for fun. Life is too short to nurse old batteries. Flame suit on.
Previously my batteries usually lasted 7-11 years, (1980s cars being highway driven every day). Now I do lots of short trips, running the 4 way flashers on the side of the road, radio on for lunch with the engine off, charging equipment etc. Now I realize why all the work trucks needed a battery every 3 years.