Making the game you want to make is the best option, writing content you are not comfortable with or have a poor understanding of will greatly reduce the quality of the writing. If you are curious about one or like it in games but not in reality (like NTR for most), then it is really up to how you feel. Research is key for the kinks you don't know a lot of. [Insert funny "For research purposes" meme reference]
Where I disagree with chainedpanda is that partnering to a specific audience will mostly result in cringey writing. My own game (which I will post here soon I hope), does catter to a rather niche category in the wider adult content community, but if as a dev/author/artist, you share this niche, it will make the content better. If they meant going for a kink you have no interest with, then the point of this paragraph is moot.