A person from tug thought that I should rent instead of buy. What does every one else do ?
Buying is a major commitment -- the real cost of these things is the ever increasing maintenance fees -- which can often approach the cash cost to simply rent the week that you want from an existing owner.
Owning can make sense if you are confident you wish to return to the same place every year -- and equally confident that you can afford those MFs. Depending on which timeshare you purchase, there may be other perks associated with ownership that a renter can't get, such as ability to rent empty rooms close to check-in at a discounted rate (like HGVC and Worldmark allow).
Other timeshare owners have become experts at trading their timeshare(s) through II or RCI (or SFX) and have mastered the ability to get two units (or more) for each timeshare interval that they own.
There is no one answer that fits everybody -- and each owner tends to advocate what has developed for them that they enjoy and understand.
I definitely encourage you not to buy quickly -- there is a near endless supply of these things and it is worth your time to study them and figure what is best for you.
Ask lots of questions --- and good luck!