You trade off freedom for companionship basically, but in a good relationship you can still have a good amount of freedom still (you just need to consider the needs of your partner too).

Relationships take effort and compromise; communicating can be hard (but it’s probably the most important thing in a relationship).

Not being in a committed relationship, it’s a lot easier to live without as many obligations.

Also, if you live together you can pool your resources both financially and effort-wise which can help a lot.