I don't know why some members go round and round about upgrading.
It's a personal choice. No one can answer that question for you. You
know what you plan on doing, what you're capable of, how much you
intend to use this program.
If you upgrade and do nothing, then of course it is not going to do you
If you are in a country in which you cannot get offers, not get tasks, and
you can't get referrals and everything is negative for you, then you would
probably decide upgrading is not for you.
In addition, no one needs to pay out of pocket to upgrade if they don't want
to or they are unsure at their point in time. They might want to learn the
site inside and out, try out the various ways they can earn, etc.
Upgrading may make sense for one person and not for another person.