My father put me in a kung fu class when I was six. He was a brown belt in Judo, and I always assumed he just wanted to share that joy..kind of like when fathers sign their kids up for T-ball.
I practiced practically daily until I was about 25. Then I got the whistle, and pretty much evenly split my training and whistle time. And then my son was born and that pretty much killed the kung fu
I’m hoping in the next year or so, once he starts school, I’ll find some free time again to start some practicing and stuff.
I can’t really speak to the temple ideology, since obviously I wasn’t given up to a temple 
But I can speak as a long term and oftimes obsessive practitioner. And I mean obsessive. I once practiced one particular sword technique for 5 hours straight walking up and down the street (using a practice sword, of course). I got close to 10,000 reps in that day. My neighbors were used to me 
What drove me then is much of what drives me now on the whistle: It was something I really enjoyed doing, and I wanted to be really good at it. From my perspective (and from many of the philosophies and sayings I’ve been exposed to), it’s a journey of growth. There is no perfection, and no end to the journey, really.
I never really thought of myself as making myself into a more an more perfect killer, though to be sure, that’s part of what it’s all about. The long-term martial arts have warped my world view a bit, I’m quite certain. When someone walks up to me on the street, I instinctively decide how I’d take them down if I had to, and position myself in an advantageous manner in case of confrontation, for instance. When someone walks behind me, or is physically close to me, I’m hyper-aware of it, and I find myself seeking reassurance that they’re out of my vulnerable spots (such as hearing their footsteps, etc). I don’t want to over-dramaticize things..it’s not like if someone walks up behind me, I jump up in a fighting stance and yell out Bruce Lee epithets. But I am quite aware of these things, and I guess they’re things most people don’t dwell on. I take it as an unintended consequence of spending most of my life focusing on self-defense.
It has stood me in good stead, the couple of times I’ve had to use my skills “on the street”…I spent plenty of time in bars when I was younger and in the navy, and if you spend enough time there, you’re bound to run into trouble, and it’s not always trouble you could run away from. But by and large, really, if you’re training just to learn not to be a victim, a complete life of study is pretty much overkill. I trained becuse I enjoyed the heck out of doing it, took joy in my body’s movements, and found the thoeries fascinating.