Yes, that is true. I'm so sorry to hear about your hamster! I've had them before and was always torn up inside, upon their death. My mother always said, "That's the price you pay for loving them." That wasn't meant in a mean way, of course, it just means that there are huge rewards from having a pet hamster, and all good things must eventually come to an end. The best things you can do are to take photos of your current hamster, make sure it is given a beautiful funeral when that time comes, and to buy another hamster one day.