Just imagine the people that scraped together enough $ to buy 500 or 1000 bitcoins back in the day thinking they didn't have much compared to the other guys.
Time both humbles us and exalts us all. Both of us might lose our ass, but I feel this is a risk worth taking for me. Even if I lose, I'll know I lost supporting something worthwhile.
Yeah, ever since I stumbled upon XMR and was introduced to it by people like you on the subreddit, I have been trying to scrape as much money as I can to put into XMR... I was honestly trying to ride the bitcoin train to accumulate as much as possible, but I honestly can't see it going any higher right now and feel like this is the best XMR/BTC ratio we'll see for sometime. At least I hope so (lol). I just don't see how XMR won't be a success... it's just too good.
Edit: Also, just curious, does poleniex calculate how much is being converted from bitcoin to XMR? I have looked for my purchase earlier to see if it was on there, and it wasn't.
Regarding your edit, if I recall correctly you can analyze your trades somewhere and also calculate an average.