"cur non" meaning in Latin

{
  "forms": [
    {
      "form": "cūr nōn",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "phrase",
        "head": "cūr nōn?"
      },
      "expansion": "cūr nōn?",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin phrasebook",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Why am I not with you?",
          "text": "Cūr ego tēcum nōn sum?",
          "type": "example"
        },
        {
          "english": "Why don't you command her to be brought over hither?",
          "text": "Cūr nōn illam hūc transferrī iubēs?",
          "type": "example"
        },
        {
          "english": "Why do you not buy a halter, and hang yourself?",
          "text": "Cūr nōn ēmistī restem suspendiō?",
          "type": "example"
        }
      ],
      "glosses": [
        "why not?"
      ],
      "id": "en-cur_non-la-phrase-iQ4GZt9E",
      "links": [
        [
          "why not",
          "why not"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kuːr noːn/",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "[kuːr noːn]",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "/kur non/",
      "note": "modern Italianate Ecclesiastical"
    },
    {
      "ipa": "[kur nɔn]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "cur non"
}

{
  "forms": [
    {
      "form": "cūr nōn",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "phrase",
        "head": "cūr nōn?"
      },
      "expansion": "cūr nōn?",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Latin entries with incorrect language header",
        "Latin entries with language name categories using raw markup",
        "Latin lemmas",
        "Latin multiword terms",
        "Latin phrasebook",
        "Latin phrases",
        "Latin terms with IPA pronunciation",
        "Latin terms with usage examples"
      ],
      "examples": [
        {
          "english": "Why am I not with you?",
          "text": "Cūr ego tēcum nōn sum?",
          "type": "example"
        },
        {
          "english": "Why don't you command her to be brought over hither?",
          "text": "Cūr nōn illam hūc transferrī iubēs?",
          "type": "example"
        },
        {
          "english": "Why do you not buy a halter, and hang yourself?",
          "text": "Cūr nōn ēmistī restem suspendiō?",
          "type": "example"
        }
      ],
      "glosses": [
        "why not?"
      ],
      "links": [
        [
          "why not",
          "why not"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kuːr noːn/",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "[kuːr noːn]",
      "tags": [
        "Classical"
      ]
    },
    {
      "ipa": "/kur non/",
      "note": "modern Italianate Ecclesiastical"
    },
    {
      "ipa": "[kur nɔn]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "cur non"
}