Gin is nothing more than Vodka that's been given a purpose. And, if a Gin and Tonic is girly, I'll laugh when whoever said that dies of malaria. For those who don't know, Gin is a grain alcohol that, at a certain stage, is literally Vodka. The addition of botanical flavors (they vary but Juniper is the most common) provides a delightful undertone to the drink.
The secret, for those who care, to having a good gin drink goes something like this:
Rules of Gin:
It must be served cold (the colder the better)
If the alcohol has an intense burn, it needs to be diluted
When mixing, use anything sweet with caution (there are exceptions but this is a pretty good rule)
Best flavor pairings with Gin: sour and bitter.
Avoid, at all costs, fruit drink + gin as the result tastes unsettlingly like rotten fruit.
Unlike Vodka, there is often a distinct difference between brands of Gin. For example, my favorite Gin (Hendrick's) has a distinct flavor of cucumber while another brand uses a particular type of flower. Most Gin is flavored with Juniper, a taste similar to how fresh fir trees smell.
Unlike other types of alcohol, Gin doesn't need aging and thus even the incredibly high end options are relatively cheap. There are, of course, a few brands that release wood barrel aged Gin and the result is interesting to say the least.
And, for the record, Gin is my drink of choice. But, for those who might not care for it I suggest trying a Spiced Rum + mountain dew (mixed at about 1:4). It is shockingly delicious and a perfect drink if your goal is to get drunk. I generally see Gin as more of a relaxing with friends sort of drink (or just relaxing in general).