Why do you buy so many devices which come with chargers - i.e. phones and tablets, mostly? I'm on my 4th 'smart phone' in total, counting from the original Nokia N-GAGE (the 'taco phone', got it because it was a cheap and easy way into the 'smart' phone world). I replaced the Nokia because I cracked its screen, the Qtek S200 because I ran out of replacement batteries, the Motorola Defy+ is still in use as a 'work phone' and the Xiaomi Redmi Note 5 is my current main device. Add to that 2 tablets (plus an early third one (Ainol Novo 8 Advanced) which charges off a 9V adapter, still works) and I'm up to 5 USB chargers (plus a Nokia charger) in 16 years.

Also, don't take those chargers to the dump, instead take them to a thrift store or some charity. They can sell the things for a few €, the things get reused, everybody is happy.