Perhaps deep down inside you know the answer, and may want to hear it from someone else.
If not, I think the window of opportnity for boxing is much smaller than that of the motorcyle trips

As an aside (and I'm not sure this helps you), three years ago I missed watching a championship baseball game in which my son was playing to attended a scheduled dinner with business clients. While I've always been very involved in my kids' sports, the dinner was pretty important.

As it turned out, my son was the winning pitcher, had three hits, including a decisive 2-run double as they upset a previously undefeated team.

I'll regret my decision for the rest of my life. It was June 25, 2003.

So maybe I'm saying to follow your heart.

Best of luck on whatever you decide.