Not sure if the OP spreads his 100 flights over multiple airlines, or sticks to one. If the former, then I can see some resentment about elites getting ahead of him: if the latter he needs to remember to add his FF number as he, too, will probably be an elite.

The essential point is that he needs to understand what he is buying in a Biz Class ticket, and what he is not buying. Clearly the seat at the front and a better meal, some Champagne (at least in Europe) and first off the plane. Perhaps a blocked middle seat, and perhaps a little bit better service. These are exclusively for Biz Class passengers. He is also buying into a raft of extra touches at the airport which are Priority over occasional travellers, but not priority over regular travellers - lounge access, earlier boarding, faster check in etc. These he could get even if he's not Biz Class, and perhaps he should consider dropping the Biz Class and buying the other services through loyalty to the airline.

Or, if he really wants exclusivity and time-saving, go private.