Tools for ASN.1 are available on almost all operating systems. They generate code for popular programming languages such as Java, C and C++, as well as older ones including COBOL. As an example of ASN.1's universality, there are tools that have been ported to over 250 different computing platforms.
There are a lot of well-tested ASN.1 tools that have been used for a long time. Using such tools, there are less likely to be costly delays in bringing new products to market or, even worse, recalling products based on new code that hasn't been sufficiently tested for flaws.