There are so many people who enjoy watching a game of American Football. Quite a big proportion of them enjoy betting money on the match as well. Many of them find that this makes the match a lot more exciting for them and it is all part of the fun of supporting a particular team.
People that do not bet money, may not be able to understand why people who do bet, do so. However, until you experience betting for yourself then you just will never understand. There is a certain adrenaline rush and feeling of excitement and then there is the feeling when you win, it is all very difficult to explain to someone who has never experienced anything like it in the past. It is no good trying to explain to someone how much pleasure you get from betting, especially someone who is set very much against it.
Sometimes a person has suffered a big loss or seen someone suffer a big loss and they will then never agree to have a go themselves. Just do not let them spoil your fun. Remember we are all individuals and get enjoyment form different things. This is what makes life so good. You can even keep quiet that you made a bet and still get just as much fun out of the game and you will not have to fall out with them over it. It is just not worth it. It is different if someone is not sure whether to place a bet or not, but if they are dead set against it, then leave it.
But if they are unsure then you can use your experiences to help them decide what to do. Sadly some people are so set against it that they do not like the idea of anyone participating and in this sort of case then it is best to stay well away when you are watching a match you have bet on and then there will be no reason for you to disagree.