Many countries have tax free investment options, some countries don't event charge thing like capital gains tax. If you don't know all this why are you on here telling someone it's not a lot of money and that they shouldn't care?
It's not for just my personal situation, any expert would say the exact same thing, people are living in Thailand with a low cost of living. In fact someone else in this thread is saying the exact same thing as me. Here is how stupid it is to keep 13.5K sitting in a bank account doing nothing when you have a regular income:
13.5k after 5 years growth at 2%: 14,916.71
You never need to spend that money, after 5 years when the DTV ends you put it into a higher growth account for 10 years: 24,567.96
OR
15 years in ok growth at 5% 28,535.00
Do you want to give me that 4k, I mean it's nothing right?
As for my investment style, I am not investing with this, we have already said that.. so I have zero idea why you mention that. I invest with a lot more, that 5k or 13.5K would just be my semi liquid emergency funding.
As for "as room to trade when a good moment" no expert would advise that, every expert advises no hobby investor beats the market. Even Warren Buffet says the same.
You started by dictating to people, didn't even mention any percentages. Now you have changed to percentages and only giving advice, when challenged.
In a lot of countries there's a big difference, for example in the UK a low savings account is not tax efficient so people will have to pay tax on the interest. Yet I can put it in a low risk tax efficient account and get 5% tax free growth a year and liquidise in an emergency within a week. But I can't keep moving it in and out.
So I can keep the majority of my non pension savings in investments relative to my risk profile and earn much more money, whilst able to liquidate it within a few weeks and then 5K-8k in a 5% growth account.
In Summary keeping 13.5K euros in a bank account is stupid, especially if your monthly costs are covered by your income already. Remember this isn't the retired in Thailand visa. It's appealing to digital nomad of working age with a higher investment risk profile supported with a regular income.
Do you know why they say that amount? It’s for an emergency. Now if you’re monthly spend is less than 5k then having an emergency fund in easy access fundings of 5k would be sufficient to cover most problems till you access your other semi liquid savings outside of pension accounts.
euros in a low interest bank account. It’s stupid. Having 5k euro savings in easy access savings and the rest in investment that can be liquidated in a week is what experts would advise.