I am sure your wife was a lot more enthusiastic in her earlier days...One caveat with a handjob is that enthusiasm matters. For a while at the end of our sex life, my wife would get off from me fingering or licking her and then offer me a very halfhearted “are you going to be done soon, my arm is tired” handjob. More than once I had to finish it myself because she was both incompetent with a cock, and completely uncaring about it. I’ve gone to bed with my balls aching before because I refused to finish it myself, and she couldn’t/wouldn’t finish it.
Probably the most enjoyable handjob in terms of intensity and enthusiasm came from my 2nd girlfriend the first time we were together. It was unbelievable!!