I've seen all the Anime adaptations, and read all the Volumes to the Manga, and from what I've witnessed in both the Anime & Manga and Kuro himself has gone through a lot which is what brought about his overall philosophy as a Doctor.

However no matter the circumstance Kuro always goes the extra mile for each patient, whether it be because of a promise, the pay, or because Pinoko insist that he help he'll never give less than his 100%.

Although in actuality it's his moral code and the fact that he owes his own life to a Doctor who took risks that he himself has become what he is today.

His goal is to save and preserve life, because nobody ever truly wants to die...

Finally, if that's not enough to convince you to read, the show House is also inspired by the eponymous hero of Osamu Tezuka's manga Blackjack. You can easily note this in how similiar both these cynical, dark, lonely doctors (Althou BJ is without a medical license) perform medical miracles throught the series!

This influence is confirmed by House himself, who said in an episode, that his medical vocation comes from his encounter with a marginal Japanese doctor...

Sound Familiar???

What's funnier though, is how there[s even a short cross-over between Dr. House and Blackjack in the two promotional and official ads for the release of season 4 of Dr. House in Japan.

Click Link To See: https://youtu.be/d8YoHF2TIGA