I am a software developer and mainly a programmer for decades now. I love programming. I love to be "once" with the computer. I will never give this joy up. If I need to sell shoes at daytime, I will program real computer programs in the evenings. If it won't be possible with modern machinery anymore, I will take my Commodore 64. I am a free man.

Edit: Corrected since/for. :-)

(for decades)

('since' takes time_point - 'for' takes time_duration)

you mean "one" not "once" right?