I’m with you on the amount of curry ordered. One between two does us and maybe a side dish.As I mentioned on the crisp thread I am NOT a sharer, so of course the same principal applies to papadums. I'll normally order myself 2, they will then reside on my side plate where I will consume them as my starter along with the moorish delights of the raw onion, lime pickle, mint sauce and mango chutney carousel (no dunking, as @The Clamp rightly states - this isn't a cuffing FONDUE is it).
Then me and the doris will usually split one curry between us. I just don't carry the appetite any more for a whole one to myself and neither does she, especially after the papadum starter and a few Cobras. We grew tired of taking doggy bags of the stuff home with us all the time. Waste of money.