I felt Entitled

I'm very well off and retired early giving my business to my 3 sons and retired to a small farm 52 acres I (57) had bought. No intention of farming and got 5 horses for riding, my wife had died the year before I retired and that drove me to retire. My wife had a brother and he and his wife had a daughter, she wasn't good at school and started working low paid jobs after dropping out. I didn't come from money; I created my wealth and didn't inherit anything much. I help out my extended family when they needed help. My brother-in-law and his wife didn't survive Covid, their daughter was unemployed and 23, so I took her in as my housekeeper on the farm. She is plain looking and quite timid around strangers, but not around me as she had known me all her life. After a year of living together and I got a bit horny and thought about going the city to get serviced. But seeing my niece bending over, decided to bed her instead. The worst that could happen is that she gets pregnant, that is no problem as I'm not a blood relation, I'm an uncle by marriage. So, to my mind it's not incest and we are both adults, I asked, and she thought it over and agreed and ever since she has shared my bed. She is currently pregnant and having a girl, which I'm very happy about. My sons weren't impressed but that's not their concern, it changes nothing. They will still the same in my will and their cousin was already in the will and so they have not lost as a result. I just said I could've gotten a woman outside the family and so they accepted it was better to stay silence.