Thanks MDC and haha for your info. We have talked about it and the fear of getting pregnant is very off-putting for her; we love our kids, but neither of us would like to nurse infants again. You have encouraged me to continue looking into vasectomy from all aspects, it seems promising considering the disadvantages of the pill, other hormonal treatments, condoms, what have you. I have some remaining homework to do about possible psychological impact, effects on hormone production, risks in general, expected v-reversal outcome…
I still see it as a very tough decision. Although I’m in a rock-solid LTR with my wife, I can imagine future scenarios where I would wish the vasectomy was undone - it is always good to keep your options open to deal with all possible paths of life. However, I also feel that closing this option would promote opportunities of making unrestricted love with with the woman of my life, thus greatly decreasing the likelihood that I ever would come in a situation where I would regret my decision.
I know vasectomy in general has been discussed in other threads: please excuse me for diluting the OP issue with my own, selfish needs for input.