Why you should have a tarantula as a pet?
Tarantulas range from $10-$100 for the basic species. Costs for lodging generally are $20-$150 depending on how elaborate you want your tank/container. Food runs $20-$50 per year depending on using cheap crickets/roaches or a diet of pinkie mice.
The typical cat or dog will run $100's per year for purchase and maintenance.
(2) LOW MAINTAINENCE
Give them a modest home with a place to hide, feed/clean/water them 1 time a week, and keep the temperature 65-90F and they're happy.
(3) LONG LIVES
Some genus's like Aphonopelma and Grammostola have life expectancies of 20- 30 years for females. That's twice as long as the typical dog or cat.
Many species exhibit stunning colors, some even change as they mature. Just check out my gallery to see for yourself. Also watch my gallery for maturity shots, hatch to adult.
They can build elaborate webs, eat 10 crickets in one sitting, climb up/across vertical sides and ceilings (some species), hiss (some species), and preen themselves with 4 legs simultaneously (lets see Fido or fife do that).