In practice (to sound really mature) we all take on some debt, responsibly, it's time versus money, if one waits until one can afford everything one wants to do in cash there will be a lot one hasn't done by the time death comes knocking
In practice though I'd argue that this is a mistake, as illustrated by my own life. Very early I dabbled with a little credit but by my early 20s largely stopped doing that, instead for everything other than property mortgages saving first.
That's had three effects though life:
1) I've not being paying interest charges on credit.
2) My saving creating a capital pool has enabled me not to insure for anything other than compulsory vehicle insurance and property structure only. That's saved me many thousands of pounds over the last 60 years.
3) My timed use of capital enabled me to pay mortgages very early, saving vast sums in interest. I first bought a bungalow for my parents, later when I could a flat for myself. Overpaying a little each month on the bungalow plus throwing in bonuses and other extras meant its 25 year mortgage was cleared in 12 years. Then throwing both payments and extras at the flat meant that 25 year mortgage was cleared in 16 years. Remember that most of the mortgage we pay is interest, avoid that and it gets paid very quickly with far less money.
I've no idea what the total of my savings in credit and mortgage interest and insurance is, but it's obviously a small fortune of very many thousands, and as a result I haven't gone without, far from it.
I've owned/used over 30 cars and 6 motorbikes, almost all new, and a boat kept at a south coast marina. I've had total property security for much of my life and a comfortable capital reserve. I was able to retire at 54 years old since I had the value of the bungalow when my parents passed away and have been retired in comfort now for 27 years.
And all of this on mundane ordinary jobs. I've been a motor mechanic, a soldier for six years, done a factory job for a while, a service engineer and held some unexalted management positions later in my working life, twice turning down higher promotion offers.
So I reckon that those who use credit and avoidable insurance have got it wrong, they are enriching others to their own eventual disadvantage, something I've avoided to good effect.
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