Not always, it depends on the "pot odds". If the ratio of money in the pot to the amount of the bet is greater than the odds of making the winning hand, then it is appropriate to make the bet. Such calculations are the key to winning in poker over the long haul. It is easy to understand why you were unable to do better than break even.
Poker experts and professional gamblers understand the odds, practice discipline and win over the less informed. Not every hand, but over the long haul, because they only put money in the pot when they have favorable odds.
Successful poker theory applies to life in general.