Like someone said there's couple things that matter no matter what you beleive,read or been taught. You have to start with well seasoned stave. THis not only will give you a long lasting bow. But it will ensure that you bow limbs can take the prussure your going to puting them. I know the next bigest thing that destorys your bow from lasting is the use of heat on working parts of the bow.
I'm not saying you should use any heating but there's nothing that will shorten your bows life as heat on the limbs. Yea your bow comes out looking #1 but do'nt exspect it to shot 40,50,000 arrows. Theres ways of getting around heating. Staves prepaired while green,straighten and reflexed, tips come in line by tillering. I do use heat but only on handles to bring the tips inline, then only if I have to.
I made bows for almost 23 years stoped useing heat about 14 or 15 years back. In that time I'm not sure how many bows I've sold,traded,gave away. It was never a bissness and I never kept records. I've never heard of or had one brought back. I made it know if for any reason bring me the bow. If it's my fault I'll replace it.
Next storeing has something to do with it. I do'nt care want kind of a bow it is. It can,t take years standing in the corner. Gravity will take it's tole it let leaning. Store your bow on pegs or flat some way. And you have to keep it water proff.
Personly I have a couple bows a osage the first I built a hickory I shot at least a 100,000 times in 7 years. Retired it after 13 bucks. When a friend started traditional he used it another 2 years.
I have a oasge I made in 96 or 97 I used a couple years now use it as a bask up. Shoot it everyyear a good bit. It's been shot way to many times to remember. But my favoret was a 60"57#@26 osage I built in 94, 3 for a guy 1 for him 1 for his wife and 1 for his son. His son got killed I got it back in about 4 yrears solded it. Got it back in a trade after a few more years.
I had 2 strokes in 06 had to go down in weight. Always shot low 60's. Shot and hunted with it hard for 4 years trying to get back to where I was. Some else has it now I came out to the truck one morning after gobbler hunting a old guy stoped to talk. I set my bow down around the corner of the truck. 8 HOURS LATER I REMEMBERED IT. So it's likely still shooting but not by me.