This sticks out like sore thumb to me and I think you are coding solo for 10 years. If you manage to lead a team of developers or work with them you are screwed without linting rules and standardized code style. Even if they are applied it takes months to get to a get a team working in harmony - without them it will be a disaster.
- merge conflict hells because code style diferences - bad for code reviewers - bad to ready everyone's different code sytles.