Do you have many friends who own pets? I do have a few. One of my good friend owns a dog. My best friend owns some rabbits in his old house.
We have fish enthusiast back in office. I had the privilege to go to Yishun with them to take a look at the process of buying a small fight fish and the necessary nutrition and food for it. From the price tag of the tanks, pumps food and necessary maintenance fish, even a relatively cheap pet like fishes can eventually be expensive.
Owning a pet is abt like putting a child through school. There are much benefits to it and provides a nice distraction but requires commitment.
One that many do not count much is how much it cost to maintain a pet through its life time.
This image gives you quite a good idea: