What I am trying to explain here is that it's not an extreme improbable event, that's the point. Yes, you personally winning is not that common, and unlikely, that part is %100 true. However, someone with less than 100 tickets is not that unlikely. Thequin comes in here all the time, if you see this thequin, could you please tell us what percentage of all the tickets are owned by people with less than.. let's say 1000 tickets? I guarantee you that the amount is somewhere over %20, which means %20 or more of the tickets are owned by people with less than 1000 tickets. That means there is a good chance for someone with just 50 tickets to win it, compared to someone with 5 million, because there is only one of that, whereas there are thousands of others.
You are cheating yourself. Of course it is an unlikely event. If everyone had a single ticket, out of about 150 million tickets per week, it's clear that someone with a single ticket would get a the jackpot, which doesn't make having a single ticket out of 150 million any more likely. It is still an extremely unlikely event, with probability pretty close to 0.