I miss pets

I love my life and I am pleased with the decisions I have made which have lead me to where I am. But my life isn't perfect, as I strongly suspect no one's ever will be, and ever so occasionally I am reminded of the negative consequences I must accept as a result of my grand life desires. I love traveling, I must be free to take spontaneous trips, and in two years I'll be moving to Japan. Being free to travel and explore gives me much joy, but it also has plenty of negative side effects.
Owning a dog or a cat is a wonderful experience. But along with the great fun a pet can bring also comes responsibility. It's much more difficult to decide on a Friday that you're leaving town for the weekend if you have a living creature that relies on you for survival. Even if our apartment complex allowed us to own pets, I think it would be irresponsible to get a cat or dog knowing we'll have to place that responsibility on someone else in two years when we leave the country. I know I can't have a pet, but that doesn't make my desire any less powerful. What do you do when you want something you can't have? My wife seems to live vicariously through pet owners who post videos on Youtube and by petting every dog she ever sees. I've been trying to let go of my desire, but letting go is often a very difficult task indeed.