I find synths infinitely more exciting than guitars. I love playing guitars but I can't tell the difference between any of them as instruments. They're different in vague, acoustic, inexact ways to do with string gauges and pickups. It's like picking your favourite brand of tomato ketchup or something, they taste different but it's really hard to know how, or at least to me it is. I know people can wank for hours about the smallest differences between guitars, but to me with my embarrassing IQ it's just an endless grey area.
Whereas a synthesiser is a kind of... device. They have clearly different features, sounds and functions. This one has an arpeggiator. This one has aftertouch. This one is monophonic, this one is polyphonic, etc etc. These are all features that manipulate the sound in obvious, concrete ways, as drastically as a delay pedal might. So for me it's a lot easier to find them interesting. It's like playing with different Transformers.
I also love how with synths and programming it can, if you want, become a purely intellectual exercise. It's less about having keyboard skill (though I have those to pay the bills if necessary) and more about designing sounds in the abstract.
I think the fundamentals of synthesisers, like filters and envelopes and LFOs, are pretty easy to grasp with a good tutorial and some trial and error. The
Ableton tutorial is meant to be good. There are lots of free, good soft synths you can get to fuck around on. I'd highly recommend it, especially if you have a midi keyboard you can wire it up to. Or buy a cheap and cheerful little synth like a Microbrute.