As we age the male hormone testosterone comes down naturally it's a part of growing old, since your easily stimulated you ejaculate rapidly. As per the journal of sexual medicine quick ejaculation is anything below 90 seconds so yes you do have a problem If early ejaculation. How would you know the quality of yr semen unless u undergo a semen analysis and I am assuming at your age you have already fathered a child if that is true dont bother about the quality or viscosity of your semen. Please understand that sex life is not a straight line it wavers from one phase of life to another it's interconnected with multiple things like your interpersonal relationship with your spouse, your work pressure, financial or family issues if any etc. now getting attracted to unnatural things is a puzzle which I can't read into unless yr specific. I would definitely urge you to see a certified competent sexologist at the earliest and seek advice, guidance and treatment even if it is online. All the best to you

Start kegels exercise and consult for medication

Have good sleep, do exercise & yoga daily for 1 hour. Take hot milk 1 glass morning & evening. Avoid spicy. Chilli.nd fried food Take tab. Manmath Ras. Tb. Pushp dhanva Ras. Nd tb pooranchndra ras one tab. Each morning & evening for 3 months. Wd hot milk. See d results or otherwise consult a sexologist personally.