There are people that has earn huge from trading and we should not say it is not a lifetime job.
When you have something giving you money everytime, would you stop doing that same thing because someone said it's not a lifetime job. Trading is quite better than the regular jobs we hunt for because once we are getting funds from it, we should be satisfied and keep doing it to earn more from the market. Trading is good if we now how to go about it and make money foe ourselves.
It depends on individual perspective, something that mister A will see as 6, mister B might be seeing it as 9 depending on each side and understanding. So one can sai that trading is not a life time job and if he or she comes up with geniun reason it might be well understood also, when they claim that it's a lifetime job, and the reasons were presented based on your understanding, it might also be taken.
This is a case that need to be attended to with an intelligent eye. for instance, if you say it's a lifetime job, to you, I can be able to understand you as yes, you are expressing your points base on what you feel you can do. In that case, I see no problem.
i actually think that trading cannot be used as a long-term job because it is full of uncertainty. because market conditions can change and as we get older our analysis of the market may get worse and that can have an impact on the money we trade. especially as we get older, we need a stable income that can support our lives in the future. and because of this trading may not be a wise choice as a job to earn money for older people, because they need a stable income and do not require special attention like trading.
Generally, it is not supposed to be seen as a lifetime job due to the following, lack of certainty and limited ability of the trader.
Trading has not specific guarantee. a situation whereby a trader is just operating but not sure of what will happen in the nearest future, you see, that is seen as something related to gambling even if not gambling, they are a little bit related to some extent. Secondly, you are not even sure what time specifically the profits will be ready.
And the trader's ability to be operating on it, is also limited. Has he or she gets older, the strength of the body parts especially vision gets weaker. so, in general term, is not a life time job.