SQS - why limiting maximum message size?

SQS provides many pro's like bulk message send , delayed messages , polling etc. So since we have all these pro's they definitely need to limit their sizing. But how we handled was ,

• we check the message size and if the message size is above 256kb , we upload the message to s3 with unique id as file name and share the message in queue as { largeFile : true , id : (s3 File Name)} , now the consumer checks whether the largeFile is true , if so fetches from s3 and processes the data , simple :)

• Or if u want only queue go with other message brokers like rabbitmq , where there isn't any size limits.