When should I buy a new computer?

Question: When should I buy a new computer?
Query	Has query::when
Guidance	Has guidance::should
Agent	Has agent::I
Action	Do action::buy a new computer
Condition	,|x|Has condition::x}}
Goal	,|x|In order to::x}}
Source	,|x|According to::x}}
Code	{{#ask:Answers question::When should I buy a new computer?|format=list}} Add a code

When is a good time to buy a computer?

Is it better to get one when you've got a bit of cash, or wait until you need one, or is there some other appropriate time to buy a new computer?