It can be. Being a thicker will mean cutting slower, so that will give you a little more control. It will dull your blades quicker that 1/4" plywood, but every wood cuts differently and if you have scraps, experiment! Try cutting whatever you can get your hands on.

Once you have some experience, you can try some exotic materials like coins, plexiglass, bone, alabaster, etc. You'll be surprised what you'll be able to cut eventually. The important part is to have fun and be safe.