Some guys have premature ejaculations problems. I have the opposite. I could f*** for an hour if needed. And I have to actually concentrate in order to have an orgasm. With my ex of 14 years, I would say that about 1/3 of the time I did not have a orgasm. Its not a problem since it doesn't bother me. But I had a least one girl I dated that freaked out and thought I didn't like her. Since she freaked out, it of course made it harder to relax and have one. This is not something that occurred because I got older. Has happened since I was 18.
Now anal. Orgasm is going to happen everytime. It just hard finding girls that what to go anal on the first sexual encounter. But when I find one that does, I will probably marry her.