"I would like your opinion on owning just one guinea pig. I have lots of time to spend with the little fella, but I don't know if I could afford to have two."
For us humans, the saying goes that two's company but three's a crowd. When it comes to guinea pigs the adage changes - two's company but three's a herd. The short answer is: guinea pigs truly benefit from having a cage mate so I'd certainly encourage you to adopt two cavies instead of one if you can manage it!