Originally Posted by
elcruxio
The advantage I see in using 32 spokes is better availability of parts. Most rims and hubs are made with 32 spoke drillings whereas 36h hubs and rims are in fact relatively uncommon. Shimano has them in most model ranges but whether they are in stock is a different issue.
It also depends on the rim size. I wouldn't like touring with 32 spokes with a 28 inch wheel but with 27,5 inches 32 spokes would already be acceptable and 26 inch wheel is actually more durable with 32 spokes than a 28 inch wheel is with 36.
You may come across a shop with rims and/or hubs in stock. Murphy's Law says they'll be the wrong size or drilling for your needs.
Once you decide to hit mail order (or is that web order now?), you'll be able to find about any rim or hub you need.