I’m 70 and have never been able to bring myself to orgasm

You seem to understand who you are sexually and have analysed your sexual style quite well but I am wondering why you are curious about this now? Is there a particular reason why you are seeking more answers? Sometimes people focus more on self pleasuring at times when they lack confidence in their ability to attract a partner, or when they become fearful that, due to their particular circumstances, partners may not be readily available. While it is true that most people learn to self-pleasure fairly early on, there is no rule that says a person must learn to masturbate at any particular point in life – or ever. If you decide you want to try, find some time to begin to explore your own body and allow your mind to fantasise about the kind of loving, connected scenarios that do arouse you. The process will take some time, so be patient.