I don't know about any other person but personally, I've come to discover that winnings that are unexpected excites the most than the winnings that are expected, regardless of the amount of money involved.
Recently, I placed a bet on sports match, and somehow, I was very certain I was going to win it, the match started and at the end, I won my bet, odd was 1.4, not going to mention the amount I used for bet, but I won a good sum, i wasn't all that excited because it's a winning I had expected, in fact, I would have been more surprised if I hadn't won.
Then I remembered that some time ago, I was playing plinko with a random balance that was remaining on my account, I wasn't expecting any winnings, I just wanted to have fun and empty my balance, I set the risk level to "high" and was betting $0.1 on each ball that came down, I can't tell how many rounds I've played but soon enough, my account balance that was below $5 was already $40+, this money was not near the amount i won from sports betting but I was overly excited, possibly because I never really expected to win this much.
This is why I've come to this conclusion that winnings that are unexpected are more exciting than winning that have been predetermined/expected.
Feel free to comment your thoughts on this, or perhaps you have an experience to share, please feel free.
I think that placing expectations on unexpected wins is one of the signs of addiction, so it's more plausible to expect expected wins, as these can be more planned. It's true that even if the bets are made sensibly, we can still win or have an unexpected win.
But I only gamble to have fun and not expect to make a lot of money from it.