I fucked married women, single women, little girls, young boys and I

I fucked married women, single women, little girls, young boys and I even fucked a pigeon once and it died bleeding but yesterday was the first time that I fuck an old lady in her seventies and she enjoyed it, but i was disgusted, I only did it for money which I need it badly to buy a new computer and she offered me that money by fucking her I feel sick whenever I remember last night's encounter. What makes me really pissed off is that she told me to come regularly and she will give me more money I hate it, but I need to buy a new car, and I 'm wondering if there is a way which keeps me sedated or unawake when I fuck this old woman, so i will not be disgusted anymore.