Why is money still made of paper?

What material are euro notes made of?

Banknotes were originally made of paper - sometimes made of fine material - and are still printed on paper in many countries, but other materials can also be used (e.g. plastic, polymer).

The paper of the euro banknotes is made of pure cotton.

In Europe, polymer banknotes were issued in Romania, and others were issued by the Northern Bank in Northern Ireland. Outside of Europe, polymer banknotes are mainly found in tropical and subtropical countries: Australia, Bangladesh, Brazil, Brunei, Chile, PR China, Indonesia, Kuwait, Malaysia, Mexico, Nepal, New Zealand, Papua New Guinea, Zambia, Samoa, Singapore, Solomon Islands, Sri Lanka, Taiwan, Thailand and Vietnam.

Polymer banknotes have the advantage of a longer shelf life, but are more expensive to produce than paper notes and in some cases cannot be processed in existing ATMs. Heat can damage them and as they age they become brittle and easy to tear.

One of the leading manufacturers of banknote and security paper is the Louisenthal paper factory, a subsidiary of Giesecke & Devrient, with production facilities in Gmund am Tegernsee and Königstein (Saxon Switzerland).

Source Wikipedia