'Dex, I think it is pretty obvious which of these posts could give you some help. ..and it's equally obvious which ones are blowhards or folks that probably feel that only the Man should have veto power in a relationship. Silly...but also sad.
She has a perfectly reasonable position for concern (especially if you have kids or dependents). Scubaboard will go from "SPLIT FINS WILL KILL YOU" to "driving is more dangerous" in a heartbeat....but at the end of the day there are inherent risks when you start breathing compressed gas at depth. Period. The key is allaying her concerns through your own actions. If she is reasonable, you should be able to accomplish that through :
- experience (More dives, perhaps beginning with more experienced dive teams.)
- continuing education (Whether you take a class or not, read up on skills. Talk about them in her presence. Bore her with the new scuba concept of the day. She will realize how seriously you're taking it and that you are taking steps to mitigate chance accidents through diligent book study.)
- dedication (Pull out your gear on non-dive weekends and go over it's config. Change it. Change it back. Determine if you can easily reach your SMB on your shoulder or if it would be better on your belt or bungeed to the tail of your backplate. Show your dedication to improving not the quantity of your diving, but the quality of your skills and knowledge of your equipment.)
- communication (Make sure you are telling her about all these things. What you're learning. The amazing things you're seeing. The people you are meeting.)
Marriages are generally one of three things....apathetic, dictatorships, or partnerships. Mine has worked for 16+ years as the latter. We both have veto powers....but I think only three things have come up in that period that one of us felt strongly enough that that power was exercised. I respect her opinion and she respects mine....so at the end of plenty of discussion and negotiation when the veto is whipped out, we agree that the relationship is more important.