苦 in Context

我喜欢吃苦的巧克力. You translate as "bitter chocolate", is this a specifically "bitter" chocolate that people buy in China, different from "dark chocolate" which depending on its sugar content can be somewhat bitter. Just wondering why you translate it as "bitter" if it is "dark" chocolate given your preference for interpretive translation instead of word translation.

I'm really surprised there's not any other comments on the last sentence because to me this was a lot to unpack and really difficult to logic out to get to the translation!

为了孩子

I translated this as "for the sake of [their] children" but the translation of the phrase given is "as long as it's for their children". Is the idea that there's a missing 如果 or 要是 there to make it a conditional?

再苦也

Thanks to Abigail's comment, I figured this is saying something like "no matter how emotionally difficult, still..." Is that correct?

父母...觉得是甜的

The 是。。。的 pattern I'm okay with, but is 甜 a normal way to say something like this? The top-down definition given is "sweet", and I know often these words have a more poetic or abstract meaning in Chinese but that seems like a stretch to me to mean "okay", would using something like 不错 or 还好 be much different in meaning?

Sorry for all the questions and I know some of this is probably partly answered in context of the later story, but this is one of those sentences that I am just having issues making a connection with even when it's translated for me. Thanks!