The advantages of a new piano - as with a car - are above all being the first owner, the manufacturer's guarantee, the untouched immaculate condition, the possibility of determining the design yourself and possibly having the latest model.
As with a car, the disadvantages are the immediate loss of value of ~30-40% and the comparatively high purchase price right at the beginning, before you can judge whether playing the piano really appeals. In addition, people are usually overly cautious with brand new instruments that appear to be of a high quality and may put the brakes on children's sometimes impetuous joy of playing with the typical admonitions to be careful when handling the instrument.
For economic reasons, we would always recommend buying a good second-hand piano - preferably from a trustworthy dealer or accompanied by a professional from a good private owner. It is all the more important to take a look at the tips on these pages. If you pay attention to this, however, you can buy a very nice and good quality piano for relatively little money and for considerably less than the new price. This pays off, especially for budget-restricted beginners and young families. If you do have to part with the piano, you will suffer a smaller financial loss.
In terms of sustainability, the purchase of a second-hand piano is also highly recommended. The most important aspect for us is that pianos from before 1940 often have their own unique character and sound.