stroker life span?

Longevity is directly related to piston speed, rod ratio, rpm, cylinder pressure and time. The more HP you make at what rpm and FOR HOW LONG is key. A longer stroke will have a higher piston speed than a shorter stroke at a given rpm for any engine, hence more wear. A longer skirt will help but is not the end all be all. A longer rod will help negate piston ****/tilt but also sacrifices rod strength and weight. Everthing is a trade off, you just have to have a realistic view of your intended use.

Everthing is a trade off and if you want a 500+ hp stroker that will last 100K, it 'aint gonna happen. But then again, with very careful machining, forethought and not blazing it to 6k+ at every chance, try to drive it nice and not rap on it, give it good gas, keep the timing conservative, you should get plenty of fun out of it and that's what really matters. :)