is it wrong to need a man's seed so much?

No,I don't think so. Speaking as a gay male,accepting another male's seed,orally OR anally,can be a highly fulfilling experience! ORALLY,you have the physical experience of feeling his organ swelling up,just prior to his ejaculation,and the wonderful feeling of TASTING his semen as it slides across your tongue,before sliding down into your stomach. Taken ANALLY,though,there's that wonderful experience of feeling your lover's organ swelling up,(and stretching your ass-ring even a little MORE,and then feeling his CLIMAX sending wonderful globs of his semen deeply into your bowels!